Results 251 to 260 of about 2,634 (290)

Modeling the Gas Nitriding Process for Steels

Heat Treating Conference, 2013
Abstract This paper describes the development of a simulation program to model gas nitriding processes for steels and replace traditional trial-and-error methods that are expensive, time-consuming, and often inaccurate. The authors introduce a compound layer growth model that simulates key nitriding outcomes, including phase composition,
Mei Yang, Xiaolan Wang, Richard. D. Sisson   +2 more
openaire   +1 more source

STM Observation of Nitrided-Ga on Si

MRS Proceedings, 1996
ABSTRACTTo investigate of the initial stage of GaN growth on Si, 0.2 Ga monolayers (ML) on Si (111) was nitrided and then the nitrided surfaces were observed by scanning tunneling microscopy (STM). An aggregation of islands whose longest edges had a direction rotated 15 ° from Si [110] direction was observed. The shape of islands looked like a pentagon.
Y. Nakada, S. Miwa, H. Okumura
openaire   +1 more source

Alloy Effects on the Gas Nitriding Process

Journal of Materials Engineering and Performance, 2014
Alloy elements, such as Al, Cr, V, and Mo, have been used to improve the nitriding performance of steels. In the present work, plain carbon steel AISI 1045 and alloy steel AISI 4140 were selected to compare the nitriding effects of the alloying elements in AISI 4140.
M. Yang, R. D. Sisson
openaire   +1 more source

Gas pressure sintering of ?-silicon nitride

Journal of Materials Science, 1991
The sintering behaviour of β-Si3N4 powder was investigated in 980 kPa (10 atm) nitrogen at 1800–2000 °C. It is shown that β-Si3N4 has a higher sinterability than the finer α-Si3N4. The solution of small grains and reprecipitation on large grains occurred during sintering at >1600 °C.
M. Mitomo, S. Uenosono
openaire   +1 more source

High-Pressure Gas Nitriding of Steels

Metal Science and Heat Treatment, 2004
The structure, hardness, and thickness of the hardened layer on steel 16Kh2N3MFBAYu-Sh (martensitic class), steel 12Kh18N10T (austenitic class), and iron are studied after nitriding at a nitrogen pressure of 100 – 150 MPa and temperature of 950 – 1150°C with 3-h hold and after additional heat treatment consisting of 1-h tempering at 300 – 600°C.
S. A. Gerasimov, V. A. Golikov, M. A. Gress, G. G. Mukhin, V. I. Snop   +4 more
openaire   +1 more source

Gas-Reduction—Nitridation Synthesis of Nitride Phosphors for Solid-State Lighting

ECS Meeting Abstracts, 2014
In the last decade, SiAlONs and nitridosilicates have been developed as an important class of phosphor host materials because of their great potentials for solid-state lighting (SSL). However, their low manufacturability (reaction sintering and postsynthesis grinding) is a major obstacle to the widespread use in SSL applications, triggering the intense
Takayuki Suehiro, Rong-Jun Xie, Naoto Hirosaki   +2 more
openaire   +1 more source

Production of silicon nitride by gas nitridation of ultra-fine silicon powder

Journal of Materials Science, 1988
Ultra-fine silicon powder of diameter 20 to 50 nm was gas nitrided at 1373 K. Contamination with air increased the nitriding temperature, which was lower than that found in previous work for larger particle-size powders.
K. Ishizaki, S. Yumoto, K. Tanaka
openaire   +1 more source

A Review—Effect of Accelerating Methods on Gas Nitriding: Accelerating Mechanism, Nitriding Behavior, and Techno-Economic Analysis

Coatings, 2023
Yulong Zhou, Fan Xia, Aijun Xie
exaly  

Nitriding: Gas

2016
Ewa Kasprzycka, Jan Tacikowski
openaire   +1 more source

Auxiliary equipment for gas nitriding

Metal Science and Heat Treatment, 1967
L. V. Beloruchev, V. V. Dembovskii, R. I. Kaplun, I. M. Morshtein   +3 more
openaire   +1 more source