Chemical Nickel Plating Metallization Plated with Ni Alumina Ceramic Tube

Product Description

Chemical Nickel Plating Metallization Plated with Ni Alumina Ceramic Tube

Product Introduction

Is It Good to Use Ceramic Parts?

You can see the advantages of ceramic parts through the comparative table between ceramic, metal and polymer below.

Property	Ceramic	Metal	Polymer
Hardness	High	Low	Bad
Elastic Modulus	High	Good	Low
High Temperature Resistance	High	Low	Bad
Thermal Expansion	Low	Good	Good
Malleability	Low	Good	Good
Corrosion Resistance	Good	Low	Low
Electrical Conductivity	Low	Good	Low
Density	Average	High	Low
Thermal Conductivity	Average	Good	Low

What is Ceramic Parts

Ceramic parts are precision ceramic parts obtained by using high-purity special ceramic materials, through rigorous structural design and appropriate forming method, and processed. 
 

Why do Metallization on the Surface of Ceramic Parts?

Ceramic metallization is the combination of two materials with different properties. The ceramic material has the characteristics of high strength, high hardness, high temperature resistance, corrosion resistance, and good insulation performance, while the metal material has the characteristics of good thermal conductivity, strong electrical conductivity, and good ductility.

The combination of ceramic and metal materials not only achieves complementary advantages in performance, but also broadens their respective application ranges.


 

Production Process

Our product production is mainly divided into 3 steps, forming - finishing - metallization. The production flow chart is shown below.

Forming	Finishing	Metallization
We will choose the most suitable forming method on the basis of saving costs and ensuring quality.	In order to achieve the precision of the product, most ceramic structural parts need further finishing treatment after the sintering process.	Metallization of ceramics refers to the creation of thin metal layers (films) on the surface of ceramics. After the surface of the ceramic material is metallized, it has both the characteristics of ceramics and the properties of metal.

Metallization Processes We Support

Jinghui has been focusing on the production and processing of precision ceramic structural parts for more than ten years. Our metallization options include Ag, Mo-Mn and W, etc., and the surface coatings include Au, Ni, Al, Ti, Cu, Cr, etc.

Our products are widely used in optical communications, medical, lighting, machinery, aviation, aerospace, petroleum, chemical, textile, consumer electronics, electrical appliances, smart wear and other fields.


Introduction to Electroless Nickel Plating Method

Electroless nickel plating (also known as chemical nickel plating or autocatalytic nickel plating) is a deposition process in which metals are produced through controllable redox reactions under the catalysis of metals.

The following is the general process of the electroless nickel plating method applied to the surface of the ceramic structural parts.



Advantages of Electroless Nickel Plating Method

Compared with electroplating nickel, electroless nickel plating has the characteristics of uniform coating, small pinholes, no need for DC power supply equipment, deposition on non-conductors and some special properties.

In addition, due to less waste discharge, less environmental pollution and lower cost, electroless nickel plating technology has gradually replaced electroplating nickel in many fields and has become an environmentally friendly surface treatment process.

 

Product Parameters

Category	Property	Unit	99.8% Al2O3	99.5% Al2O3	99% Al2O3	95% Al2O3	94.4% Al2O3
Mechanical	Density	g/cm^3	≥3.95	≥3.90	≥3.85	≥3.65	≥3.60
	Water absorption	%	0	0	0	0	0
	Vickers hardness	HV	1700	1700	1700	1500	1500
	Flexural strength	Mpa	≥ 390	≥ 379	≥ 338	≥ 320	≥ 312
	Compressive strength	Mpa	≥ 2650	≥ 2240	≥ 2240	≥ 2000	≥ 2000
	Fracture toughness	Mpam^1/2	4-5	4-5	4-5	3-4	3-4
Thermal	Max. Service temperature (non-loading)	ºC	1750	1675	1600	1500	1500
	CTE (Coefficient of thermal expansion) 20-800ºC	1×10^-6/ºC	6.5-8.2	6.5-8.0	6.2-8.0	5.0-8.0	5.0-8.0
	Thermal shock	T (ºC)	≥ 200	≥ 200	≥ 200	≥ 220	≥ 220
	Thermal conductivity 25ºC	W/(m·k)	31	30	29	24	22.4
	Specific heat	1×10^3J/(kg·k)	0.78	0.78	0.78	0.78	0.78
Electrical	Volume resistivity 25ºC	ohm·cm	> 1×10^14	> 1×10^14	> 1×10^14	> 1×10^14	> 1×10^14
	300ºC		1×10^12	1×10^12	8×10^11	10^12-10^13	10^12-10^13
	500ºC		2×10^12	5×10^10	2×10^9	1×10^9	1×10^9
	Dielectric strength	KV/mm	20	19	18	18	18
	Dielectric constant (1Mhz)	(E)	9.8	9.7	9.5	9.5	9.5

Our Advantages

Our ceramic parts with core competitiveness include ceramic tubes, ceramic rods, ceramic substrates, ceramic grinding burrs, ceramic seals, ceramic nozzles, textile ceramics, etc., which are widely used in furnaces, semiconductors, aerospace, pump valves, new energy, fluid control, mechanical wearing parts and other fields. You are welcome to consult us for business.