粉末制备1

Ruan Jianming

Powder Metallurgy Research Institute

2007

Particle Science and Engineering

粉末冶金原理(课程分布) 40学时

教学方式: 双语讲学Chinese/English

课程内容: Part I Powder fabrication 粉体制备

PartⅡPowder characterization 性能

How do the powders fabricate？

Main methods to fabricate powders

What physio-chemical phenomenon could be observed during powder fabrication？Which method is suitable to sphere particles？

How about the particle morphologies？

How can we obtain the high purity？

What takes place during the powder fabri.?

Which condition to control the particle size?

What can we do? related powder makings.

Continuers

What are the microstructures of the particles?

What is the apparent density of the powders? Which equipment can measure the fine particles? 课时安排Talking arrangements

序言Introduction 2hrs

PartⅠ粉末制备28hrs

机械研磨Mechanical grinding 4hrs

雾化制粉Atomization 4hrs

快速冷凝RST Rapid solidification 4hrs

化学沉积Chemistry precipitation 4hrs

电解制粉Electrical fabrication 4hrs

还原制粉Reduction 8hrs

Part ⅡPowder Characterization 12hrs

颗粒结构Particle microstructure 4hrs

粒度分布Particle size and distribution 4hrs

比表面Specific surface 2hrs

考试Testing 2hrs (close book)

参考书籍:References

Powder Metallurgy Science

粉末冶金原理黄培云P/M. Principle

考核成绩Score 作业30% 卷面考试70%

Powder metallurgy

Study of the processing of metal powders, including the fabrication, characterization, and conversion of metal powders into useful engineering components.

Study of the basic laws and mechanisms of powder fabri., powder compaction, sintering and surface treatments.

R&D of novel materials and products.

Powder Metallurgy Processing

Reasons for using powder metallurgy

The future of powder metallurgy

A comparison of the relative production for some common metal powders, logarithmic scale. Further considerations 1

High volume production of precise, high quality structural parts from ferrous alloys; Consolidation of high performance materials, where full density and reliability are primary concerns;

Fabrication of difficulty to process materials, where fully dense high performance alloys can be fabricated with uniform microstructure;

Further considerations 2

Economic consolidation of specially alloys, typically composites containing mixed phase; Synthesis of non equilibrium materials such as amorphous, microcrystalline, or some special alloys;

Processing of complex parts with unique ingredients (组元）or uncommon shapes.

粉末冶金发展

History and development of P/M

历史部分: 武器, 生活用具, 艺术建筑

Weapon, life facilities, arts-construction, etc.

现代部分: 硬质合金, 高温材料, 汽车部件, 军事工程

Cement carbide, refractory materials, automobile parts, equipments in defensive, civilization products, etc.

目前, 粉末冶金最发达的国家瑞典(Sweden)硬质合金工业非常发达Hoganess, 建立许多子公司, Be number one

其次是北美(North American)和西欧(western European) 。德国的粉末冶金工业也是处于世界前列-工具钢., tooling steel.

美国的粉末冶金公司主要产品用户是汽车制造商producer，汽车工业auto vehicle industry发达，带动了美国的粉末冶金工业发展，这是因为发达的汽车工业，大量a huge of application 用粉末冶金部件。

Same to American，日本Japan的汽车工业的发展带动了粉末冶金工业发展。

Different to China与中国不一样，the western countries and Japan西方或日本的粉末冶金工业是由两部分构成conbined by two part

制粉公司：制备各种粉末：Companies to fabricate and supply powders

制品公司：买进粉末，制备零部件：Companies to fabricate final parts

粉末冶金技术的优越性与局限性

advantages and limitation

能够大量节约材料、low cast无切削、less cuting少切削，普通铸造合金切削量在30-50%，