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渗硼层

渗硼层的相关文献在1986年到2022年内共计120篇,主要集中在金属学与金属工艺、化学、矿业工程 等领域,其中期刊论文101篇、会议论文5篇、专利文献189390篇;相关期刊64种,包括机械工程材料、中国表面工程、理化检验:物理分册等; 相关会议4种,包括第十四届全国金相与显微分析学术年会、第八届真空冶金与表面工程学术会议、21世纪全国耐磨材料大会-第九届全国耐磨材料.磨损失效分析与抗磨技术学术会议等;渗硼层的相关文献由233位作者贡献,包括许斌、冯承明、宋月鹏等。

渗硼层—发文量

期刊论文>

论文:101 占比:0.05%

会议论文>

论文:5 占比:0.00%

专利文献>

论文:189390 占比:99.94%

总计:189496篇

渗硼层—发文趋势图

渗硼层

-研究学者

  • 许斌
  • 冯承明
  • 宋月鹏
  • 曹晓明
  • 刘仲武
  • 叶荣昌
  • 孙志春
  • 曲敬信
  • 焦东玲
  • 牟克
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 袁兴栋; 王泽力; 许斌
    • 摘要: 目的进一步提高碳钢表面低温B-Cr-Re固体渗硼层的质量。方法采用快速多重旋转碾压法(Fast multiple rotation rolling,FMRR)对碳钢表面进行预处理,然后进行低温B-Cr-Re固体共渗研究。利用透射电子显微镜、高分辨透射电子显微镜、扫描电子显微镜、X射线衍射仪等测量仪器对基体表层组织结构、显微硬度和渗硼层组织结构进行了表征。结果经FMRR处理后,基体表层发生严重塑性变形,沿着垂直于基体表面由表及里的方向,变形程度逐渐变小,总变形层厚度约为30μm,变形方向呈方向一致的流线结构;部分晶粒发生破碎现象,晶粒逐渐细化,出现约为30nm的纳米结构层,同时观察到基体表层存在非晶、孪晶、高密度位错等结构缺陷。经FMRR处理后,只有?-Fe相的X射线衍射峰变宽,但未发现新相产生。结论经FMRR处理后,基体表层显微硬度明显提高,基体表面得到明显强化。FMRR方法提高了基体表面低温B-Cr-Re共渗速度,低温渗硼层的平均厚度约为30μm,约为未处理低温渗硼层厚度的1.7倍,低温渗硼层质量也明显得到改善。
    • 谢飞; 程健; 潘建伟
    • 摘要: 在800°C粉末法渗硼过程中对中碳45钢试样和渗剂施加交流电场,研究电场频率对粉末法渗硼的影响规律和作用机制.对渗硼保温过程中试样的温度、渗硼层显微组织、相结构、厚度及显微硬度分布等进行观测分析.结果表明:交流电场使试样温度高于渗硼保温炉温,电场电流恒定时,随频率从20 Hz增至400 Hz,试样温升先降低后升高,硼化物层及增碳区厚度均先减小后增加;当电场电流为3A时,硼化物层为单相Fe2B;当电场电流≤2A时,随频率增加,硼化物层由FeB+Fe2B双相变为单相Fe2B,渗层表层硬度降低、硬度分布曲线趋于平缓.分析认为,电场频率通过综合影响渗剂反应、活性硼原子及含硼活性基团在试样表面的吸附和试样内原子的扩散来影响渗硼.%An alternating current field (ACF) was applied to samples and media during pack boriding on medium carbon 45 steel at 800 °C.The effects and working mechanism of the A.C frequency on the boriding were studied.The temperature of the samples during the soaking of the boriding,boriding cases' microstructure,phases,thickness and micro-hardness distribution were investigated.The results show that the ACF makes the temperature of the boriding sample higher than that of the furnace during soaking.With the increase of the frequency from 20 Hz to 400 Hz,the temperature rise first decreases and then increases.The thickness of the boride zone and the carbon-enriched zone first decreases and then increases.When the ACF current is 3 A,the single phase Fe2B is obtained.When the ACF current is not more than 2 A,with the increase of the ACF frequency,the boride zone changes from the dual phases FeB + Fe2B to the single phase Fe2B.The hardness of the surface layer decreases.The slope of the hardness profile along the boriding case becomes flat.It is proposed that the ACF frequency affects the pack boriding through affecting reactions among the boriding agent,adsorptions of active boron atoms and boroncontaining species on the samples' surface,and diffusion in the treated samples.
    • 刘伟东; 张旭; 屈华
    • 摘要: Based on the empirical electron theory of solids and molecules (EET),the valence electron structures (VESs) of FeB and Fe2B were calculated,and then the relationship between them and hardening in boronizing layer of steel surface was analyzed.It is showed that after boronizing,the basic reason of the increase of hardness and abrasive resistance in steel surface lies in the binding forces of the strongest bond of FeB and Fe2 B are far bigger than that of α-Fe in matrix.The hardness of FeB is bigger than that of Fe2 B,which microscopic essence lies in the binding force of the strongest bond,the binding force of the main bond structure connection and the covalence density in FeB is 27.12 %,4.8 % and 3.66 % bigger than that of Fe2 B respectively.Compared with Fe2B,the covalence bond space distribution is more nonuniform of FeB while its main bond structure has stronger covalence but that of Fe2 B has stronger metallicity,which is the basic reason that brittleness of FeB is bigger than that of Fe2 B.The bonding power of FeB is only bigger than that of Fe2B 0.85%,so Fe2B priority to formed easily changes to FeB and lead to the brittleness increase in boronizing layer of steel surface.%依据EET理论,计算了FeB和Fe2B价电子结构并分析了它们与钢渗硼层硬化的关系.研究发现:渗硼表面改性后,钢表面硬度和耐磨性提高的根本原因在于FeB和Fe2B最强键的键合力远大于基体a-Fe最强键的键合力;FeB的硬度比Fe2B大的微观本质在于FeB相最强键的键合力、主键络连接键的键合力和共价电子密度分别比Fe2B的大27.12%、4.8%和3.66%;FeB相比Fe2B脆性大的微观本质在于FeB共价键空间分布更不均匀,FeB相主键络具有较强的共价性,而Fe2B相主键络具有较强的金属性;由于FeB相成键能力仅比Fe2B的成键能力大0.85%,因此优先形成的Fe2B相极易转变为FeB相,使得钢表面渗硼层的脆性增强.
    • 安亚君; 武越; 马壮; 张博
    • 摘要: 分别以硼铁和B4C作为供硼剂,添加适量的供氮剂、供硫剂以及填充剂,采用粉末包埋法在20CrMo渗碳钢表面制备了渗硼层和渗硼氮硫层,分析了两类渗层的物相组成、硬度和磨损性能.结果表明:渗硼层均由Fe2B、FeB、Fe3C相组成,渗硼氮硫层则由Fe2B、Fe3N、FeS、Fe3C相组成,未形成脆性FeB相;渗硼层和渗硼氮硫层的表面硬度、耐磨粒磨损和耐黏着磨损性能均高于渗碳钢的,且渗硼层的硬度和耐磨粒磨损性能高于渗硼氮硫层的,而耐黏着磨损性能低于渗硼氮硫层的;以硼铁为供硼剂制备的渗硼层的耐磨粒磨损性能优于以碳化硼为供硼剂的,而耐黏着磨损性能低于以碳化硼为供硼剂制备的.%Using ferroboron and B4C as a boron source respectively and adding moderate nitrogen source, sulphur source and fillers, the boriding layers and sulfur nitrogen boriding layers on the surface of 20CrMo carburized steel were prepared by the powder embedding method, and then the phase composition, hardness and wear resistance of the two layers were analyzed.The results show that the boriding layers were both composed of Fe2B, FeB and Fe3C phases while the sulfur nitrogen boriding layers were composed of Fe2B, Fe3N, FeS and Fe3C phases without the formation of brittle FeB phase.The surface hardness, abrasive and adhesive wear resistance of the boriding layers and the sulfur nitrogen boriding layers were all higher than those of the carburizing layer.Moreover, the surface hardness and abrasive wear resistance of the boriding layers were higher while the adhesive wear resistance was lower than those of the sulfur nitrogen boriding layers.The abrasive wear resistance of the boriding layers prepared with ferroboron as a boron source was higher while the adhesive wear resistance was lower than those with B4C as a boron source.
    • 魏桂芳; 赵恒
    • 摘要: This paper introduces the development experimental methods of the boronizing process of 45 steel,observes the microstructure of the boriding layer,and analyzes its main defects and reserch on the main factors having influence on the quality of the boride layer from various process aspect.The results show that the surface of the boron tooth zone is looser than subsurface and the carbon pick-up and grain coarseness appear in the transition zone.%介绍45钢渗硼工艺的实验方法,对渗硼层的显微组织进行了观察,分析了渗硼层的主要缺陷,从各种热处理工艺过程方面,探讨了影响渗硼层质量的主要因素.研究结果表明,渗层硼化物组织都呈梳齿状锲入基体,硼齿区最外层比次外层更疏松;过渡区有不同程度的增碳和晶粒粗大现象.
    • 谢春洋; 孔德军
    • 摘要: 利用热浸渗法在Cr12MoV钢表面制备一层渗硼层,对其进行CO2激光淬火处理.采用电子扫描电镜(SEM)、能谱仪(EDS)和X线衍射仪(XRD)分析渗硼层盐雾腐蚀前后表面形貌、化学元素组成和物相,考察激光淬火前、后渗硼层盐雾腐蚀性能.通过电化学工作站测试激光淬火前后试样自腐蚀电位、电流密度和腐蚀速率等腐蚀特性,讨论激光淬火对电化学腐蚀的影响机理.研究结果表明:渗硼后表面产生许多孔隙,激光淬火消除这一缺陷.盐雾腐蚀后渗硼层产生间隙腐蚀,主要腐蚀产物为y-FeO(OH)和Fe3O4,激光淬火试样只出现少量点蚀和细微裂纹,钝化膜由Fe3O4和α-FeO(OH)组成.激光淬火后渗硼层自腐蚀电位未发生变化,但激光淬火后自腐蚀电流密度下降11%,电化学腐蚀性能得到明显的改善.
    • 刘思萌; 张越; 马世图; 杜艳佳; 王光东
    • 摘要: 采用粉末包埋方法在Cr12MoV表面制备了渗硼层,主要研究了渗硼层的显微组织、硬度及耐磨性能.研究结果表明,在不同的渗硼温度、保温时间条件下,Cr12MoV钢表面渗硼层均由FeB相和Fe2B相构成,具有较高的硬度、耐磨性,耐蚀性.
    • 王文昌; 谢春洋; 孔德军
    • 摘要: 利用热浸渗法在Cr12MoV冷作模具钢表面制备了渗硼层,通过激光淬火对其进行了强化处理,并采用扫描电镜、X射线衍射仪分析了渗硼层表面形貌和激光淬火前后物相组成.通过测试摩擦系数和磨损体积比,考察了激光淬火前后渗硼层摩擦与磨损性能,对其磨损机制进行了分析.结果表明,渗硼层表面存在大量孔隙,经激光淬火后试样表面孔隙有所减少,组织更加均匀;渗硼处理生成了FeB单相渗硼层经激光淬火后渗硼层以FeB物相为主,产生了Fe2B、Fe-Cr和Cr2B等物相,降低了渗硼层脆性;激光淬火后渗硼层平均摩擦系数和磨痕深度分别下降了20%和24.6%,磨损形式由剥落磨损转变为磨粒磨损,提高了渗硼层耐磨性能.
    • 周旸
    • 摘要: n this study, the 40Cr,40CrNi and 45Cr steels substrates were pack -borided at 850, 880, 910and 940°Cfor 3, 5, 7, and 9 h.The morphology formed on the surface of steel substrates were confirmed by optical microscopy analysis .The characteristic sawtooth morphology of the boride layer is dominant .Boride layer thick-ness formed on the borided steels depending on process temperature , treatment time and element contents of the substrates.Also, we measure the microhardness of borides of different carbon -contents steels, and the peak mi-crohardness is in the range from 1444HV0.1 to 1490HV0.1.After calculating the layer growth kinetics, it dem-onstrates a parabolic relationship between layer thickness and process time and the growth rate constant K increa -ses with boriding temperature .Also, the activation energy for the process increases with the amount of element contents of the substrate .%为获得理想的钢铁材料渗硼工艺参数,对影响渗硼层性能的主要因素进行了对比试验。用固体渗硼技术对40Cr、40CrNi和45Cr钢分别在850°C,880°C,910°C和940°C保温条件下进行3,5,7,9个小时的渗硼处理,首先用光学显微镜观察3种钢在不同加热温度和保温时间下各种钢渗硼层的形貌和显微组织,发现渗层以齿状楔入机体。随后通过测量3种钢在不同温度下不同渗硼层深度的硬度,发现硬度峰值在1444HV0.1到1490HV0.1之间。最后通过对40Cr、40CrNi和45 Cr钢进行渗硼动力学计算与分析,得出渗硼层厚度与渗硼时间呈抛物线关系、生长速率常数随着渗硼温度升高而增加的规律;并且随着含碳量和合金元素的增加,渗硼所需的扩散激活能随之增大。
    • 樊新民; 林银; 黄洁雯; 王秀娟
    • 摘要: 为了解渗硼层硼化物的生长过程,采用系列磨片和计算机三维重建技术与可视化,研究了纯铁渗硼层硼化物的立体形貌.结果表明:渗硼层的硼化物以柱状晶形式向基体生长,同时柱状晶也在横向生长,纵向生长速度大于横向生长速度;处于表面的柱状晶根部连在一起形成连续的渗硼层,柱状晶生长过程中会出现倾斜和合并;三维形貌的二维剖面形貌呈齿状,与实际二维金相组织一致;从不同剖面方向观察同一硼化物,硼化物形态不尽相同,二维图像不能完全反映硼化物的真实形貌.
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