Modification of Nitrogen-Containing High-Chromium Steels by Nanosized Lanthanum Hexaboride

2019 ◽  
Vol 822 ◽  
pp. 37-43 ◽  
Author(s):  
Eduard Yl'evich Kolpishon ◽  
Ludmila Vladimirovna Razumova ◽  
Sergey Vladimirovich Ryaboshuk

The paper presents the results of a study of the lanthanum hexaboride nanosized powder modification effect on the cast structure of martensitic and austenitic steels deoxidized with aluminum and silicon. The study was conducted on high-chromium steels of austenitic and martensitic classes, and nanosized lanthanum hexaboride powder was used as a modifier. Studies of the chemical composition of the obtained samples, qualitative and quantitative analysis of non-metallic inclusions, the structure of the steel and thermodynamic modeling were carried out.

2013 ◽  
Vol 13 (4) ◽  
pp. 97-102
Author(s):  
J. Szajnara ◽  
A. Studnicki ◽  
M. Kondracki ◽  
J. Głownia

Abstract In the paper authors have undertaken the attempt of explaining the causes of cracks net occurrence on a massive 3-ton cast steel casting with complex geometry. Material used for casting manufacturing was the low-alloyed cast steel with increased wear resistance modified with vanadium and titanium. The studies included the primary and secondary crystallization analysis with use of TDA and the qualitative and quantitative analysis of non-metallic inclusions.


2016 ◽  
Vol 61 (4) ◽  
pp. 2135-2140 ◽  
Author(s):  
A.W. Bydałek ◽  
S. Biernat ◽  
P. Schlafka ◽  
M. Holtzer ◽  
W. Wołczyński ◽  
...  

AbstractThis article presents qualitative and quantitative analysis of the waste produced by KGHM Polska Miedź. The waste has been analyzed according to its chemical composition and balanced in order to be reused and recycled. Special attention has been paid to mining industries producing the biggest amount of waste and ore enrichment businesses generating waste, which isn’t reused nowadays. Laboratory reseach has been conducted on floatation waste, different kinds of slags, waste gases and water slag extracts. Attention has been drawn to the possibility of using a computer program SLAG - PROP for analyzing physicochemical features, technological features and the refining of the acquired waste. Consequently, the further way of utilization of waste has been shown. From this point of view, analyses of DTA and TG slags in an oxide coating seem especially interesting. Having a particular composition they can be successfully utillised in the refining processes of copper pyrometallyrgy.


1938 ◽  
Vol 11 (4) ◽  
pp. 728-739
Author(s):  
J. G. Robinson

Abstract From the viewpoint of the works chemist, a knowledge of the qualitative and quantitative analysis of organic accelerators is desirable as a valuable supplement to a knowledge of their technical applications. Confusion or uncertainty as to the composition of a particular package of material may occur even in the best regulated factories; this may well prove to be an organic accelerator, and the chemist is expected to be able to give a decision in all such cases. Again, many accelerators are still sold under trade names and a knowledge of their chemical composition enables the chemist to use them in a more intelligent way, especially in predicting their vulcanizing characteristics in conjunction with other accelerators, and also in disposing of off-grade compounds by incorporation of a percentage in standard mixings. Although the uniformity of qualtity reached by present-day suppliers of accelerators is of a high order, most works chemists wish as a matter of principle to institute some form of acceptance control. Tests in rubber are obviously desirable, but they take considerable time and require expensive plant; analytical methods, where available, enable some form of control to be exercised in cases where tests in rubber are impracticable owing to shortage of time or other considerations.


INFO ARTHA ◽  
2017 ◽  
Vol 2 ◽  
pp. 56-79
Author(s):  
NFN Khusnaini ◽  
Agung Widi Hatmoko

Attitudes towards tax compliance (willingness to comply) Indonesian society is still low. Required an innovative tax dissemination to increase it. The purpose of this study was to determine whether the tax dissemination based on Fogg Behavioral Model (FBM) approach may increase wiliingness to comply. The FBM based tax dissemination asserts that for a person to perform a target behavior, which is a willingness to comply, he or she must be sufficiently motivated, have the ability to perform the behavior, and be trigerred, to perform the behavior. This research is a combination of qualitative and quantitative analysis of statistical data results of the questionnaire, interviews, and observations of the respondent and the experimental process of dissemination. The method used in this study is a quasi experimental with patterns of nonequivalent control group (pretest-post which is not equivalent). Based on the results of data analysis, interviews and observations of the respondent and the experiment, this research showed that theFBMbasedtaxdissemination hasapositiveimpactto willingnesstocomplyofthetaxpayers. 


Sign in / Sign up

Export Citation Format

Share Document