Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Hiroyuki Takamiya"'
Publikováno v:
Metallurgical and Materials Transactions A. 44:3484-3493
In vacuum carburizing of steels, short-time carburizing is usually followed by a diffusion period to eliminate the filmlike cementite (θGB) grown on the austenite (γ) grain boundary surface. In order to obtain the θGB amount during the process, th
Publikováno v:
Solid State Phenomena. :1177-1182
In order to predict microstructures during vacuum carburizing, the model which simulates not only the carbon(C) diffusion but also growth/dissolution of cementite(θ) is required. For development of a new model we applied vacuum carburizing to low al
Publikováno v:
Tetsu-to-Hagane. 97:123-129
Publikováno v:
Tetsu-to-Hagane. 97:130-135
In vacuum carburizing of steels, a short-time carburizing is usually followed by a diffusion period to eliminate the film-like cementite (θ) grown on austenite (γ) grain boundary surface. Due to a radical reaction with decomposed hydro-carbon gas,
Publikováno v:
Tetsu-to-Hagane. 96:498-503
In our previous paper, the eutectic liquid that appears between the cementite (θ) foil and austenite was proposed to be most suitable for rapid transient-liquid-phase (TLP) bonding of steels. A partial substitution with Cr was required for metastabl
Publikováno v:
Tetsu-to-Hagane. 96:363-370
A plane-to-plane bonding by the rapid reaction with liquid phase enables a simplified forming of hollow or complex steel parts. The time for disappearance of transient liquid is absolutely short if a high-carbon filler material controls the Fe–C eu
Autor:
Hiroyuki Takamiya, Mikio Kondoh
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 52:519-523
We have developed a new compaction process which realized very high green density of iron powder. The crucial key of the process is the discovery of the die wall lubricant, Lithium stearate, which works at around 423 K under applied compaction pressu
Autor:
Tetsuya Tanigami, Yumi Tanahashi, Shuji Matsuzawa, Kazuo Yamaura, Hiroyuki Takamiya, Tosiki Matsuyama
Publikováno v:
Journal of Applied Polymer Science. 50:1807-1813
The color development due to the complex formation of poly(vinyl alcohol) (PVA) with iodine increased with increasing syndiotacticity of PVA. Isotactic PVA showed no color development. The color development of syndiotacticity-rich PVA film decreased
Publikováno v:
Materia Japan. 34:611-613
Publikováno v:
Journal of Japan Institute of Light Metals. 38:216-221