Korea Institute of Machinery & Materials

Hyung-Sik Chung

Yong-Jin Kim

Kyu Hwan Lee

Hai-Doo Kim

Jae-Woong Ko

Yongsoo Jeong

Sang Ro Lee

Jian-Qing Jiang

Doyon Chang

Byung-Kee Kim

Jaimoo Yoo

Disclosed is an Ni-plated layer of biaxial texture, which is formed by electroplating. In the Ni-plated layer,peaks measured on a &thgr;-rocking curve have a FWHM of 7&deg; or less in terms of the misorientation on the c-axis; and peaks measured on &phgr;-scan have a FWHM of 21&deg; or less in terms of the misorientation on the plane formed by the a-axis and the b-axis. Also, a process of electroplating a Ni layer are disclosed. The process comprises forming a Ni-plated layer of biaxial texture under a magnetic field by electroplating and subjecting the Ni-plated layer to thermal treatment to develop the biaxial texture. This electroplating process is expected to give a significant contribution to the development of the electroplating technology and to replace the vacuum deposition used for the preparation of thin film magnetic materials or thin film piezoelectric materials.

Electroplating process for preparing a Ni layer of biaxial texture

There is provided a process for producing titanium composite, comprising the steps of: molding titanium powder, titanium alloy powder, or powder comprising titanium into a certain shape by a cold isostatic press or cold press; reacting the shape with hydrocarbon gas at its decomposition temperature or higher, to form TiC therein; and providing the shape with high density by vacuum sintering, hot isostatic pressing, hot forging, hot rolling and/or the combinations thereof. TiC a reinforcing material, is in-situ formed by reacting a cold-pressed body of the powder with hydrocarbon gas and cleaner than the externally added one and distributed more uniformly and finely in the Ti matrix, leading to a significant improvement in wear resistance and high temperature property.

Process for producing Ti/TiC composite by hydrocarbon gas and Ti powder

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Changwon-shi, South Korea

Hyung-Sik Chung