Stainless-Steel Ball-Milling Method for Hydro-/Deutero-genation using H2O/D2O as a Hydrogen/Deuterium Source

ChemSusChem ◽  
2015 ◽  
Vol 8 (22) ◽  
pp. 3773-3776 ◽  
Author(s):  
Yoshinari Sawama ◽  
Takahiro Kawajiri ◽  
Miki Niikawa ◽  
Ryota Goto ◽  
Yuki Yabe ◽  
...  
2020 ◽  
Vol 93 (9) ◽  
pp. 1074-1078 ◽  
Author(s):  
Yoshinari Sawama ◽  
Miki Niikawa ◽  
Kazuho Ban ◽  
Kwihwan Park ◽  
Shin-yo Aibara ◽  
...  

2014 ◽  
Author(s):  
James T. Lehner ◽  
Christopher A. Brown

Changes in abrasive particle size, shape, and sharpness are studied in multi-axis lapping of sealing regions of stainless steel ball valves. Twelve experimental runs, investigating changes in the abrasive particle as a function of lapping load and motion, are performed during lapping. The influence of changes in the lapping load and motion are investigated using design of experiments. Changes in the size, shape, and sharpness of the abrasive particle are influenced by the load and by the motion of the seats and balls of the valves. Combinations of lapping load and motions, as opposed to any individual variable, tend to dominate the influence on the changes in the abrasive particle.


2014 ◽  
Vol 966-967 ◽  
pp. 80-86
Author(s):  
Varunee Premanond ◽  
Onnjira Diewwanit

The objective of this work is to investigate the tribological behavior between WC-Co cemented carbide and austenitic stainless steel under repeated rotation sliding. Influences of cobalt content of commercial grade cemented tungsten carbide on friction coefficient and material transfer phenomena have been explored. Three grades of commercial WC-Co cemented carbide with similar medium WC grain size were employed; WC-12Co, WC-14Co and WC-19Co. The average grain size were ranges between 0.85-1.1 μm and the hardness of about 86-88 HRA have been given by the material maker. The composition analysis and the average grain size of tungsten carbide have been rechecked. Furthermore, the carbide grain size distribution was recorded and the fracture toughness was calculated for each WC-Co grade. The experiments were carried out using ball on disk test. The ball was made from SUS304 grade and the disk was fabricated by 3 grades of WC-Co cemented carbide. The friction coefficient was measured under dry sliding. The characteristics of contact surfaces were explored on the ball as well as on the disk after tests to reveal the presence of a metallic transfer on the WC-Co cemented carbide disk and the wear scar on the ball. The measurement results of wear volume on the stainless steel ball disclosed that maximum wear rate was found from the stainless steel ball rub against WC-19Co tool material.


2008 ◽  
Vol 3 (7) ◽  
pp. 361-365 ◽  
Author(s):  
Jong-Hyoung Kim ◽  
Isami Nitta ◽  
Noritsugu Umehara ◽  
Hiroyuki Kousaka ◽  
Mamoru Shimada ◽  
...  

ATZ worldwide ◽  
2013 ◽  
Vol 115 (10) ◽  
pp. 40-43
Author(s):  
Jochen Kruse ◽  
Stephan Hasler ◽  
Volker Dünkel

1995 ◽  
Vol 36 (2) ◽  
pp. 282-288 ◽  
Author(s):  
K. Niwase ◽  
T. Tanaka ◽  
Y. Kakimoto ◽  
K. N. Ishihara ◽  
P. H. Shingu

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