Thermal Insulation Ceramic Shoulder Washer / Alumina Ceramic Collars
Tag Key words : Ceramic Shoulder Washer
Inch size Alumina shoulder washers (also called ceramic hat washers) electrically help to isolate components from one another. For instance, you can isolate one sample holder from another sample holder . Available in standard screw sizes. Made from 99.7%+ Al2O3(alumina), these non-porous washers are fully vacuum compatible and bakable to over 400oC.
Can't find the exact size or shape you need? Please fill out our Custom Size Quote Form or call us at 0086 15988537579. We welcome custom product and fabrication projects.
Alumina is the more common name of Aluminium Oxide and is a hard wearing material used for many applications. Once fired and sintered, it can only be machined using diamond-grinding methods.
Aluminium oxide is an electrical insulator but has relatively high thermal conductivity (35 W/m K). In its most commonly occurring crystalline form, called corundum or a-aluminium oxide, its hardness makes it suitable for use as an abrasive and as a component in cutting tools.
Aluminium oxide is responsible for metallic aluminium's resistance to weathering. Metallic aluminium is very reactive with atmospheric oxygen, and a thin passivation layer of alumina quickly forms on any exposed aluminium surface. This layer protects the metal from further oxidation. The thickness and properties of this oxide layer can be enhanced using a process called anodising. A number of alloys, such as aluminium bronzes, exploit this property by including a proportion of aluminium in the alloy to enhance corrosion resistance. The alumina generated by anodising is typically amorphous, but discharge assisted oxidation processes such as plasma electrolytic oxidation result in a significant proportion of crystalline alumina in the coating, enhancing its hardness.
Alumina's combination of hardness, high temperature operation and good electrical insulation makes it useful for a wide range of applications. Alumina is the most commonly used type of ceramic and is available in purities up to 99.99%.
Different types aluminium oxide ceramics we made :
- 95% Al2O3
- 97% Al2O3
- 99% Al2O3
- 99.5% Al2O3
- 99.99% Al2O3
Applications of Alumina Components :
High Temperature and Aggressive Environments
Its high free energy of formation makes alumina chemically stable and refractory, and hence it finds uses in containment of aggressive and high temperature environments.
Wear and Corrosion Resistance
The high hardness of alumina imparts wear and abrasion resistance and hence it is used in diverse applications such as wear resistant linings for pipes and vessels, pump and faucet seals, thread and wire guides etc.
High purity aluminas are also used as orthopaedic implants particularly in hip replacement surgery.
Metal Cutting Tools
The high “hot” hardness of alumina have led to applications as tool tips for metal cutting (though in this instance alumina matrix composites with even higher properties are more common) and abrasives.
Alumina is used as milling media in a wide range of particle size reduction processes.
The high dielectric constant coupled with low dielectric loss particularly at high frequencies leads to a number of microwave applications including windows for high power devices and waveguides.
The high volume resistivity and dielectric strength make alumina an excellent electrical insulator which leads to applications in electronics as substrates and connectors, and in lower duty applications such as insulators for automotive spark plugs
Ceramic parts we can produce:
Alumina ceramic, Zirconia ceramic , Ceramic Dowel pin, Zirconia Positioning pin, Insulating ceramic plate
Ceramic adapter plate,Ceramic centering pin,Ceramic connectors,Ceramic spinner,Ceramic roller
Ceramic blade,Ceramic brackets,Ceramic disc,Ceramic insulator,Ceramic rod,ceramic atomizer
ceramic fuse pin,ceramic nozzle,ceramic ferrule,ceramic necklace,ceramic ornament,alumina ceramic plate, ceramic cylinder, ceramic guide, ceramic pin, ceramic bushing, ceramic brick,ceramic injection molding,ceramic bushings,ceramic smoking pipe, ceramic spacer,ceramic piston pump,ceramic part
ceramic heating element vaporizer e cigarette, al2o3 ceramic, ceramic donut atomizer, alumina ceramic disc, alumina ceramic sheet , ceramic alumina , ceramic pressure sensor , ceramic sheet,
ceramic washer, zirconia ceramic plate, ceramic insert, white ceramic ring, ceramic shaft
ceramic pump, ceramic piston, ceramic nail, ceramic insulators, ceramic rod 3mm , ceramic dowel pin
ceramic pin gage , alumina ceramic parts , ceramic burr , ceramic proppant , ceramic needle
ceramic grinder, alumina ceramic rod , alumina ceramic ring, ceramic conical burr , ceramic heater rod
ceramic gear , machinable ceramic, ceramic arms , white ceramic ornaments , sustained high temperature on ceramics
Mingrui offers you a wide range of production facilities like extrusion, injection moulding, pressing and casting. Depending on product geometry and quantities, we will choose the suitable technique for your products.For the final finishing of the parts we use CNC machining centres, equipped with diamond tools in order to meet high accuracies.
Our aim is to offer the ideal solution for any application. Our engineers therefore offer custom solutions that range beyond our existing product portfolio. With our well-equipped industrial development facilities, we produce innovations that can be rapidly commercially exploited.
Properties Sheet of zirconia and alumina :
||g / cm³
|Coefficient of thermal expansion
|Modulus of Elasticity Young's Mod
|HV Hardness HV
|Flexural Strength @ room temperature
|Flexural Strength @700°C
|Compressive Strength @ room temperature
||MPa *m 1/2
|Heat conductivity @ room temperature
|Electrical Resistivity @ room temperature
|Max use temperature
|Resistance to acid alkaline
|Thermol Shock Resistance
||△ T ( °C )
|Tensile Strength @ 25 °C
Mingrui ceramic manufacture and provides alumina ceramic components for a wide range of application like Mechanical Equipment, Electronic & Electrical, Oil Drilling, Medical, Chemical Industry etc. According to actual application and customer's requirement, the purities vary from 95%-99.7% and the forming methods will be different. The forming methods applied in our plant include dry pressing, isostatic pressing, injection moulding, extrusion moulding. With experienced engineers and talented workers, we are confident to offer high quality, high precision, complex components for customers worldwide.
Mingrui Ceramics has years of experience designing and developing technical ceramic solutions for a wide variety of applications and industries.Wear And Corrosion Resistant Ceramic Shaft Chemical Stirring Rod. We offer this expertise to all of our customers to ensure the best design and materials are chosen for their specific application and needs.Wear And Corrosion Resistant Ceramic Shaft Chemical Stirring Rod,Typically, our custom technical ceramic components and parts we supply are used for one of three main reasons:
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Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have any other question, pls feel free to contact us .