離滲碳體 的英文怎麼說
中文拼音 [líshèntàntǐ]
離滲碳體
英文
divorced cementite-
Abstract : the paper analyzes the wear resistance and anti - adhesion of 20 and 45 steel formed in austenitic ion - nitrocarburising and comparisons to the general ion - nitrocarburising. the experiment shows that austenitization - nitrocarburising can be carried out at 590 700, its wear resistance and anti - adhesion is the best at 630 ， the worst at 660 and anti - adhesion is the best at 630 ， the worst at 660 and the mediate at 570 600. with the help of raising processing temperature properly and speeding up the process the wear behavior can be improved
文摘:研究20鋼、 45鋼經奧氏體離子氮碳共滲后的耐磨性和抗咬合性，並與普通離子氮碳共滲后的作了比較，試驗表明:在570 700范圍內進行離子氮碳共滲后，其耐磨性和抗咬合性以630處理時為最佳， 660處理時最差，而570 600處理時則介於兩者之間，通過適當提高共滲溫度，再提高滲速，從而縮短共滲時間的同時，可以提高耐磨損性能。Strengthening mechanism of ion nitriding is different from surface quenching and cementation, which makes surface strengthen by quenching to get martensite. ionic nitriding is the way to make materials strengthe n, which result from the steady compound formed on the surface of the metal. there is no need for quenching after treatment
離子滲氮的強化機理不同於表面淬火，滲碳等表面熱處理方法，這些方法必須進行淬火得到馬氏體使表面強化，而離子滲氮是在金屬表面形成穩定化合物而使材料強化，處理后不須淬火。In order to avoid eutectic carbide, improve nodularity, increase nodule count and increase mechanical properties, three times of inoculations were adopted in the centrifugally cast nodular iron pipes production : a ) inoculation in ladle ; 2 ) pouring stream inoculation ; 3 ) in - mold inoculation
摘要在離心鑄造球墨鑄鐵管生產中，為防止共晶滲碳體析出，改善球化，增加石墨球數，提高力學性能，採用了三次孕育： （ 1 ）包內孕育； （ 2 ）澆注時隨流孕育； （ 3 ）型內孕育。An optimized cvi - pip process has been achieved, by which the c / sic composites with 2. 1 ig / cm3 high density and uniformity are fabricated in 200 hours. the microstructure and composition of pyrolytic carbon interphase and cvi - pip silicon carbide matrix in the c / sic composites are investigated with the help of polarization microscope, scanning electron microscope, and x - ray diffraction technique, etc. the structure characteristic of pyrolytic carbon interphase and cvi - pip silicon carbide matrix, and effects of cvi - pip process on it are summarized and discussed. by growth course and feature of pyrolytic carbon interphase and cvi - pip silicon carbide matrix analyzed, a whole - course densification mechanism of lamellar - growth - pattern is proposed to explain the densification phenomenon, which makes a systematic understanding on the feature of pyrolytic carbon interphase and cvi - pip silicon carbide matrix, and the multiple stitching interface binding
根據熱解碳中間相、 cvi - pip系sic基體相的組織構成與外貌特徵，通過對熱解碳中間相、 cvi - pip系sic基體相的生長過程和生長特徵進行分析，提出了基於層生長模式的緻密化過程理論，解釋了熱解碳中間相、 cvi - pip系sic基體相以及釘扎誘導結構多重界面的形成： （ 1 ）在1150下， cvi - sic亞基體相遵從「過飽和?凝聚?融合」機理沉積，以8f型? sic為主，同時還會有少量4h型? sic ，無游離si和游離c存在； （ 2 ） pip - sic亞基體相由非晶態sic以及彌散分佈的- sic微晶、 si - o - c和游離c組成； （ 3 ）熱解碳中間相與碳纖維增強相之間、 cvi - sic亞基體相之間形成滲透釘扎結構過渡界面， pip - sic亞基體相與摘要cvi一sic亞基體相之間形成誘導結構過渡界面。分享友人