Mo Mn Metallized Alumina Aluminum Oxide Ceramic Components

Product Description

Mo-Mn Metallized Aluminum Oxide Ceramics Structural Components Alumina Ceramic Insulators

Product Introduction

What is Insulators?

The devices used to support and insulate wires are called insulators. Insulators are mainly used to fix wires to poles and insulate wires from wires.

Insulators are one of the key components of high-voltage transmission lines, and their performance directly affects the safety of the entire transmission line.

At present, the materials of insulators mainly include three kinds, namely ceramics, tempered glass and organic composite materials.

Advantages of Alumina Ceramic Insulators

1. High temperature resistance, can be used in high temperature environment for a long time.

2. Good shock resistance and vibration resistance, not easy to break.

3. The insulation performance is stable and does not decrease over time.

4. Good corrosion resistance, suitable for environments with acid, alkali, salt and other chemical substances.
 

 

Production Process

Jinghui has been focusing on the production and processing of precision ceramic structural parts for more than ten years. Our product production is mainly divided into 3 steps, forming - finishing - metallization. The production flow chart is shown below.


Why do Metallization on the Surface of Ceramic Structural Parts?

The metallization of ceramic surfaces is a process with high technical content. The specific influencing factors include metallization formula, metallization temperature and holding time, metallization microstructure, metallization coating thickness and coating method, etc.

The function of the metallization layer on the ceramic surface is to enhance or improve the surface properties of the product, such as oxidation resistance, wear resistance, corrosion resistance, and certain electrical, optical and tribological properties.

Introduction to Mo-Mn Method

There are many methods of metallizing the surface of ceramic structural parts, among which the process of Mo-Mn method is:


Metallized ceramic structural parts obtained by the Mo-Mn method have the following characteristics:

High bonding strength, high air tightness, high reliability and good heat resistance.

Product Parameters

Alumina ceramics is a ceramic material with α-Al2O3 as the main crystal phase. It has the advantages of high mechanical strength, good thermal conductivity, high electrical strength and insulation resistance, low dielectric loss, and stable electrical properties with temperature and frequency. Therefore, It is widely used as electrical insulating material.

The material properties of alumina ceramics are shown in the table below.

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

Jinghui specializes in the production of alumina ceramic precision parts, zirconia ceramic precision parts, silicon nitride ceramic precision parts and silicon carbide ceramic precision parts.

Our products are widely used in precision machinery manufacturing, microelectronics, semiconductors, aerospace, biomedicine, optical fiber communications, testing and inspection, and solar photovoltaics.