technical ceramic solutions

Tag Archives: Alumina

Technical ceramic solutions for your wear resistant solutions

Innovacera supply a variety of high-purity ceramic materials in Xiamen, China. We are a leading supplier of wear-resistant ceramics, offering solutions for abrasion and corrosion problems.

Our solutions are based on your application parameters: types of abrasion, system and equipment design, operating temperatures and materials. Innovacera’s fine-grained alumina, silicon nitride and zirconia ceramic offer properties that will optimize the solution for any wear application.

Wear-Resistant ceramic linings increase productivity in a variety of typical applications include:

Ash Lines                                                Centrifuges
Pipe Elbows                                           Chutes
Pump Housings                                    Tanks
Cyclones                                                 Transitions
Troughs and Flumes                            Dust Collectors
Spray Driers                                          Chippers and Chip Bins
Hoppers                                                 Wash Boxes
Dredging Equipment                           Silos
Screw Conveyors                                 Classifiers

Wear resisstance solution’s Project

chute ceramic lining

chute ceramic lining

ceramic lined pipe 04

ceramic lined pipe 04

ceramic lined pipe 13

ceramic lined pipe 13

ceramic lined pipe 10

ceramic lined pipe 10

ceramic lining pipe

ceramic lining pipe

To solve abrasion problems in your material handling systems, contact the experts at Innovacera mail

DPC (Direct Plated Copper)Metallized Ceramic- By Tong Hsing

DPC (Direct Plated Copper)Metallized Ceramic Substrate
Smaller, Thinner Thin Film, Thick Film Design.
Better Heat Dissipation; Longer Lifetime DPC Substrate

Why DPC Metallized Substrate?
DPC is created for better electrical performance and flexibility because fine line capability and solid copper via fill. DPC is also a cost effective alternative for the reasons of more flexible manufacturing capability, especially for thinner metallization.

How To Make DPC Substrate?


 Comparison Of DPC To Other Technologies

Key Attributes


Thin Film 

Thick Film 

Conductor Electrical Conductivity

Very good. Thick copper conductor.

Poor conductivity due to very thin film thickness.

Good conductivity. Lowered by presence of glass phase.

Via Electrical Conductivity

Very good. Vias filled with pure copper.

Very good. Vias filled with pure copper.

Poor. Vias filled with 50% metal and 50% glass or pores.

Feature Resolution

Goood. Depends on Cu thickness.

Very good.

Goood. Determined by screen print capability.


Low to moderate. Vias and metal deposited in same process.
Low cost substrate.

High cost. Expensive substrate. Lapp and polish required after via deposition.

Low to moderate. Expensive metal pastes. Low cost substrate and low cost deposition technology.

Thermal Performance

Very good. AIN or alumina substrate and high thermal conductivity metal.

Good. AIN or alumina substrate. Metal layer too thin for heat spreading.

Moderate. Alumina substrate. Conductivity through the metal is poor due to glass phase.

Suitability for Power Applications

Very suitable. Copper conductors carry high currents.

Not suitable. Thin film layers can not carry high currents.

Suitable. Conductors with glass phase have moderate conductivity.

Suitability for High Frequency Applications

Suitable. Good conductivity and line resolution

Very suitable. Excellent line resolution.

Not suitable.




No. Often contain Pb additives.

Overall, copper plating perfoms superior compared to other technologies in terms of its features and applications.

DPC Features:
Higher circuit density
Outstanding high-frequency characteristics
Excellent thermal management and heat-transfer performance
Outstanding solderability and wire-bonding assembly characteristics
Low tooling costs and quick turnaround of prototypes
Applications of DPC:
Substrates for solar concentrator cells
Power semiconductor packaging including automotive motor control
Hybrid and electric automobile power management electronics
Packages for RF
Microwave devices

High-alumina ceramic insulator at heart of new spark plug

Surefire+ Spark Plug

Sure Fire Plus spark plugs use a high-alumina insulator material to provide higher voltages without electrical breakdown and fit into the tighter packaging windows used in modern gasoline engines. (Credit: Federal-Mogul.)

Federal-Mogul Corp., a Southfield, Mich.-based supplier of OEM and aftermarket automotive components and systems, has introduced a new high-performance spark plug featuring a high-alumina insulator material that enables the plug to handle the increasing thermal, voltage, and other requirements of modern high-output gasoline engines.

The company’s SureFire Plus spark plugs provide higher voltages, extend plug life, and are designed to fit efficiently into the increasingly crowded engine cylinder heads, according to a news release.

Trends in modern gasoline engine technology include the need to maintain or increase performance while lowering CO2 emissions. Downsized engines with high compression ratios produce much higher peak temperatures and pressures during combustion, and use leaner air-fuel mixtures and alternative fuels that are more difficult to ignite. All these factors increase the energy requirement and thus the voltage needed across the spark plug, according to the release. Coupled with reduced real estate for the spark plug in the cylinder head—the result of smaller cylinder diameters, more valves per cylinder, and direct fuel injection technology—these changes led Federal-Mogul to develop a better insulator material that would enable high-voltage ignition and fit in a smaller package.

Rich Keller, director of product ignition engineering, says the new spark plugs can handle voltages of 42 kV or more, compared to 36 kV for the previous generation of plugs. “The ceramic insulator is the only barrier between the electrodes,” Keller says in the release. “It forces the spark to jump the gap, which initiates combustion. The unprecedented level of ceramic performance we have achieved in SureFire Plus spark plugs enables a new generation of ignition systems that provide greater energy and durability in a smaller package.”

Keller says the down-sized insulator is also a big deal. “Traditionally, spark plugs have used a 14-mm thread body,” he explains. “Today, most new engines are coming out with 12-mm thread bodies. In the future, we see this going to 10 mm in size.”

According to the release, spark plug insulators have typically been produced from a material consisting of 95 percent alumina and 5 percent glass. The insulator material in the new plugs is nearly pure alumina doped with small amounts of other oxides designed to improve high-temperature shunt resistance and minimize electrical current leakage through the ceramic.

Keller says the advanced insulator material required changes in processing methods and equipment. “In production of SureFire Plus plugs, we’ve gone from 8,500 psi compaction pressure to 30,000 psi,” he explains. “We are also heat treating the blanks to make sure we can handle them without breaking them.

The company is currently in pilot production with the new plugs; high-volume manufacturing is slated to start in May 2014. According to the release, Federal-Mogul also expects non-automotive applications for the patent-pending material, such as in the compressed natural gas market.

Linked: ACerS

Alumina is Harder than Zirconia, So It Must be More Wear Resistant?

Although it’s commonly accepted that hardness equates with wear resistance, it’s not always the case. In sliding wear environments, hard counter faces that do not interact with each other are an advantage. The engineering grades of Alumina are typically 25-50% harder than zirconia grade so in sliding wear environments or pure abrasive wear, where third body abrasive wear particles are present, alumina often outperforms Zirconia.

However, in erosive wear environments such as those caused by an abrasive slurry impacting a wear part such as an oilfield valve, Zirconia can be the best performer as it’s high toughness reduces the spread of impact cracks and the micro fracture of the surface which generate erosive wear debris and surface damage.

When running an engineering ceramic against a dissimilar material it’s not always the case that the softer material performs poorly. Y-TZP running against Y-TZP has been shown to be a very poor wear surface combination, whereas, Y-TZP running against cast iron provides a better overall wear performance than the harder, alumina/cast iron combination.

Although its beyond this article to delve too deep into the tribology of ceramic interfaces, in Zirconia on Zirconia contact it’s the low thermal conductivity of the Zirconia that can be a negative factor, as the frictional heat generated in like on like sliding does not dissipate from the surface and the surface hardness decreases with a follow on increase in wear related damage.

Advanced Ceramics Show on The 9th China(Jingdezhen)International Ceramic Fair

The 9th China(Jingdezhen)International Ceramic Fair on 18th-22th Oct,2012,

The principal exhibitions of the Fair include:
1, Daily-use Ceramics
2, Creative Ceramics
3, Overseas Ceramics
4, Advanced Ceramics
5, Ceramic Packaging
6, Tea-sets & Tea-ceremonies
7, Art Ceramics
8, Contemporary International Ceramic Exhibition
9, Exhibition of Finest Ceramics from Ten Famous Kiln Sites

Some interesting products show as below;

Alumina Ceramic Pen

Alumina Ceramic Pen

Alumina Ceramic Bend Tube

Alumina Ceramic Bend Tube

Alumina Ceramic Faucet with applique galze

Alumina Ceramic Faucet with applique glaze

Alumina Ceramic Tube and Ring

Alumina Ceramic Tube and Ring

Other Advanced Ceramic Components

Other Advanced Ceramic Components

Advanced Ceramic Components for daily-used

Advanced Ceramic Components for daily-used

Ultra-thin Transparent Ceramic Lighting

Ultra-thin Transparent Ceramic Lighting

Zirconia Ceramic Components

Zirconia Ceramic Components

Zirconia Ceramic Roller

Zirconia Ceramic Roller


Introductions of Alumina Ceramics Materials

At present innovacera’s alumina ceramics material is including two types: high-purity and ordinary.

High-purity alumina ceramic series is the ceramic material with Al2O3 content over 99.9%. Due to its sintering temperature up to 1650-1990C and transmission wavelength of 1 ~ 6μm, it is usually made into molten glass to replace the platinum crucible: Cause its light transmittance and alkali metal corrosion resistance, it can be used as sodium tube for HID application; in the electronics industry, it can be used as integrated circuit ceramics substrate and high-frequency insulating materials.

According to the difference in Al2O3 content, ordinary type alumina ceramic series is divided into 99 ceramics, 95 ceramics, 90 ceramics, 85 ceramics etc. The ceramics with Al2O3 content of 80% or 75% is also classified as ordinary alumina ceramic series. Innovacera produce alumina all is above 92% Alumina.

Among these, 99 alumina ceramic materials are used for producing high-temperature crucible, refractory furnace tubes and special wear-resistant materials such as ceramic bearings, ceramic seals and valve films and so on.

95 alumina ceramics is mainly used as corrosion-resistant and wear-resistant parts.

85 ceramics are often mixed in some steatites, thus improving electrical performance and mechanical strength.

It can be sealed with molybdenum, niobium, tantalum and other metals and some are used as electro-vacuum devices.