It is shown that RE addition in the form of a small solid piece in the centre of the negatively biased work table results in increased nitrogen concentrations in the near surface regions of steel specimens coupled with improved surface hardness properties. The same small piece of RE can be ...
Prenitridingaustenitizing and tempering treatment temperatures do notaffect the growth of the diffusion layer, but the surfacehardness slowly decreases with increasing temperature,especially after nitriding at 570deg C.S.MridhaD.H.JackSurface modification technologies, vol. 12: Twelfth international ...
本发明低硬度聚氨酯弹性体材料,其具有较好的力学性能,良好的耐溶剂性能以及切削加工性. The present invention is a low hardness polyurethane elastomer material having good mechanical properties, good solvent resistance and machinability.陆锦贤
a3) measured according to ASTM D1505 to obtain a density of 0.865 ~ 0.884g/cm3. a4)按照ASTM D2240测定得到的肖氏A硬度为60～85. a4) obtained were measured in accordance with ASTM D2240 Shore A hardness of 60 to 85.CN池永成伸竹内文人渡边启二德弘淳室伏贵信遣水一广伊藤智章丸子展弘...
The nanoindentation test has been applied to evaluate the mechanical properties such as hardness, elastic moduli and deformation behaviors of Fe4N iron nitride layers produced on Armco iron and En40B steel by plasma nitriding, and PVD-TiN coatings deposited on En40B with or without prior plasma ...
An amorphous silica abrasive composition, comprising: a) a precipitated silica, comprising particles wherein said particles have: i) a mean particle size of from 5 to 11 microns (s.d. < 9); ii) an Einlehner hardness of from 0.8 to 2.5 for abrasive to brass screen and from 5 to 8 ...
The invention provides a composition which has the advantages of forming a solidifying film with high flatness even on a substrate whose surface islow in flatness, being applicable to be used in a protection film of an optical device which has is high in transparency and surface hardness and ...
Silver-based rare earth alloy material of the present invention has good elongation, high recrystallization temperature, high hardness at high temperatures, good wear resistance and other characteristics, suitable for use as sliding electrical contact materials, in particular for the production of micro-...
The invention discloses a water-soluble high-hardness antibacterial nail polish which is applied to nail cosmetology industry and a preparation method thereof. The nail polish comprises the following components: 20-60% of water-based polyurethane dispersoid, 20-60% of acrylic ester emulsion, 5-10...
The present invention relates to a method of plasticized polysulfide sealants, polysulfide modified by the addition of the curing agent to control the degree of crosslinking polysulfide sealant, thereby adjusting the hardness of the sealant, plasticized achieve the purpose. 聚硫改性剂的合成:将液体...