Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Nobuyasu Kawai"'
Autor:
Satoshi Wakihama, Nobuyasu Kawai
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 50:571-576
The plastically deformed layer induced by drill cutting of 4650 sintered steels using prealloyed and elemental powders were investigated in this study. The microstructures, pore elimination and microhardness on the surface of cut holes were determine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecb6bed8fb09a4943e512b9b5f6f1b28
https://doi.org/10.2497/jjspm.50.571
https://doi.org/10.2497/jjspm.50.571
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 50:780-784
Fatigue crack propagation behavior was investigated for high tensile sintered steels of about 1000MPa level.It was made clear that the diffusion bonded steel was most excellent as for the fatigue crack propagation behavior. The difference of fatigue
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c66dbd6bc021a9447f980a523428e4d
https://doi.org/10.2497/jjspm.50.780
https://doi.org/10.2497/jjspm.50.780
Autor:
Tsuyoshi Miyata, Chiaki Tada, Nobuyasu Kawai, Yoshiki Seino, Masanori Oka, Susumu Kanzaki, Yoshitaka Yamanaka, Syouko Takano-Watou
Publikováno v:
The Journal of Clinical Endocrinology & Metabolism. 84:82-89
To evaluate the role of serum free or unbound insulin-like growth factor I (IGF-I) on bone growth, we measured serum free IGF-I levels in 354 healthy children and adults (193 males and 161 females, aged 0–40 yr) and in 21 prepubertal GH-deficient (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f9ffcc6cbe5c6879ad35a79a98b0abf
https://doi.org/10.1210/jcem.84.1.5407
https://doi.org/10.1210/jcem.84.1.5407
Autor:
Nobuyasu Kawai, Jinsuke Takata
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 43:383-389
The effect of graphite properties on the dimensional change of Fe-2mass% Cu-0.8mass%C-0.75mass% zinc stearate was examined by using two kinds of natural graphite, flaky graphite of 0.5-35μm and amorphous graphite of 3-9μm. The compacts were sintere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::612ba2d40d522f9a04a1317eeac8c9f5
https://doi.org/10.2497/jjspm.43.383
https://doi.org/10.2497/jjspm.43.383
Autor:
Nobuyasu Kawai, Jinsuke Takata
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 42:1430-1436
The effect of sulfur on the dimensional change during sintering was examined by using two different water-atomized iron powder groups with about 0.01 and 0.3mass% sulfur. The compacts of Fe-2mass%Cu-0.8mass%C-0.75 mass% zinc sterate were sintered in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcab35ba91e627c63ecfc80b123f2bfe
https://doi.org/10.2497/jjspm.42.1430
https://doi.org/10.2497/jjspm.42.1430
Autor:
Nobuyasu Kawai, Jinsuke Takata
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 42:827-832
The dimensional change behavior of the system Fe-2wt%Cu-0.8wt%C-0.75wt% zinc stearate was investigated under an atmosphere of dissociated ammonia and the results were compared with those of endothermic gas. The sintering process was divided into thre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b70276809f5e996fc8e946f13b339a1
https://doi.org/10.2497/jjspm.42.827
https://doi.org/10.2497/jjspm.42.827
Autor:
Nobuyasu Kawai, Jinsuke Takata
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 41:1553-1559
The dimensional changing behavior of the system Fe-2wt%.Cu-0.8wt%C-0.75wt% zinc stearate under an atmosphere of endothermic gas was investigated. The decrease of heating rate causes shrinkage and the decrease of cooling rate causes expansion. On the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4befcd8dec33b306ec4f90cb74640eaa
https://doi.org/10.2497/jjspm.41.1553
https://doi.org/10.2497/jjspm.41.1553
Autor:
Nobuyasu Kawai, Jinsuke Takata
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 41:1150-1156
The influence of delubricating conditions on dimensional change of the compacts of the system Fe-2wt%.Cu-0.8wty.C-0.75wt%.Zn-st was examined under an atmosphere of endothermic gas. An abnormal expansion, which increases under slower heat pattern and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d95e1f0b99e5021e6f2d461e6219b68a
https://doi.org/10.2497/jjspm.41.1150
https://doi.org/10.2497/jjspm.41.1150
Autor:
Nobuyasu Kawai
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 41:209-214
Hot isostatic pressing technology has been applied to produce new materials with high performance using gas atomized alloy powders as raw materials. The author has been studying the technology in order to extend the application field for a long time.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56c908d0f02468cbc676cd118399b298
https://doi.org/10.2497/jjspm.41.209
https://doi.org/10.2497/jjspm.41.209
Autor:
Nobuyasu Kawai, Jinsuke Takata
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 41:1012-1018
A dilatometer, which has been used to investigate the sintering behavior in powder metallurgy, is most useful when the measurement is carried out systematically by simulating the operating conditions in a practical sintering furnace. This paper repor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7be2cd8329ca9edec51f998b353c3022
https://doi.org/10.2497/jjspm.41.1012
https://doi.org/10.2497/jjspm.41.1012