您现在的位置: 首页> 研究主题> 铬合金

铬合金

铬合金的相关文献在1985年到2023年内共计965篇,主要集中在金属学与金属工艺、口腔科学、冶金工业 等领域,其中期刊论文167篇、会议论文22篇、专利文献249051篇;相关期刊122种,包括实用口腔医学杂志、中华口腔医学杂志、中国药物与临床等; 相关会议19种,包括2013年川渝蓉粉末冶金学术交流会、“三友杯”全国合理选用新型优质纺纱器材提高纱线质量整体水平技术研讨会、2012年中国铸造活动周等;铬合金的相关文献由1748位作者贡献,包括张志雄、蒋志芳、李根有等。

铬合金—发文量

期刊论文>

论文:167 占比:0.07%

会议论文>

论文:22 占比:0.01%

专利文献>

论文:249051 占比:99.92%

总计:249240篇

铬合金—发文趋势图

铬合金

-研究学者

  • 张志雄
  • 蒋志芳
  • 李根有
  • 李骏
  • 丁仕武
  • 丁幸
  • 徐帮明
  • 王小军
  • 王文斌
  • 刘凯
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

作者

    • 贾成厂
    • 摘要: 黄金是一种广受欢迎的贵金属,非常珍贵。基于人们的认知程度、黄金的稳定性和保值性等因素决定了金的“高贵”身价。然而,金并不是一种高高在上脱离“群众”的贵族元素,相反,金可以与许多“平民”元素融合形成“金合金”,在众多领域里得到广泛应用。贾成厂教授“黄金趣话”系列文章之(三)高屋建瓴,带您了解金银合金、金铜合金、金镍合金、金铬合金等“金合金”所具有的独特优异性能以及广泛用途。
    • 李筱(编译)
    • 摘要: 奥托昆普不锈钢炼钢厂在一座生产不锈钢的90t槽式出钢炉上安装了一个ABB ArcSave■的电磁搅拌器,它带来了包括消除炉底渣壳在内的多方面的工艺改进。位于瑞典阿维斯塔的奥托昆普不锈钢炼钢厂主要生产高铬不锈钢。为生产这类不锈钢,在电弧炉冶炼时必须加入铁-铬合金,这些合金由于熔点较周围熔体低,因此铁-铬合金有可能会沉积在炉底形成渣壳。
    • 鄢祥; 林红
    • 摘要: 钴铬合金因其优良的耐腐蚀性、生物安全性以及价格低廉等优势而长期用于口腔金属烤瓷基底冠桥的制作.钴铬合金烤瓷修复体的制作一直以传统失蜡铸造技术为主;近年,选区激光熔化(selective laser melting,SLM)技术因其个性化、精准化以及高效等优势而越来越受到义齿制作中心和临床医师的重视与青睐.本文重点就SLM钴铬合金烤瓷基底冠的制作流程、组织结构、力学性能、金-瓷结合强度、基底冠适合性以及耐腐蚀性和生物安全性的最新研究进展进行综述.%Cobalt-chromium alloys have been applied to dental porcelain fused to metal (PFM) restorations over the past decades owing to their excellent corrosion resistance,good biocompatibility and low price.The production of CoCr metal-ceramic restorations has always been based on traditional lost-wax casting techniques.However,in recent years,selective laser melting (SLM) is becoming more and more highly valued by dental laboratories and dental practitioners due to its individuation,precision and efficiency.This paper mainly reviews the recent researches on the production process of copings,microstructure,mechanical property,metal-ceramic bond strength,fit of copings,corrosion resistance and biocompatibility of SLM CoCr metal-ceramic alloy.
    • 付宏宇1; 冯广智2
    • 摘要: 背景:对于牙体缺损后治疗,不同修复方式会产生不同的生物力学效果,影响预后。目的:对上颌前磨牙牙体缺损设计3种不同的修复方式和4种不同的修复材料,通过三维有限元方法进行应力分析。方法:以离体人上颌第一前磨牙为研究对象,获取Micro CT扫描数据,建立上颌第一前磨牙缺损修复三维有限元模型,设计嵌体、髓腔固位型高嵌体、桩冠3种修复方式,每种修复方式设计钴铬合金、纯钛、氧化锆、IPS e.MAX全瓷4种修复材料,进行4种方式的力学加载,面六点垂直加载或二点与牙长轴呈0°、45°、90°加载,每点加载力大小为75 N,观察模型中各部分的最大主应力的分布情况。结果与结论:①在修复材料相同的情况下,无论何种加载条件,嵌体修复组剩余牙本质的最大主应力最大,高嵌体修复组次之,桩冠修复组最小;②在同种修复方式下,无论何种加载条件,钴铬合金材料修复组牙釉质的最大主应力值最大,IPS e.max全瓷材料修复组最小;③从应力分布来看,桩冠和高嵌体修复组各部分的应力分布均匀;④结果表明,从应力分布来看,桩冠和高嵌体是较为理想的修复方式;从应力分布和保存牙本质的量来看,对于大面积牙体缺损治疗后的修复,高嵌体是更安全合理的修复方式。
    • 范建平; 赵检; 陈自强; 李明
    • 摘要: 目的 探讨不同材料、不同预弯弧度矫形棒在青少年特发性脊柱侧凸(AIS)矢状面重建中的作用.方法 建立从T1到骨盆的AIS非线性有限元仿真模型.在建立的有限元模型上进行模拟手术,分别设定矫形棒的属性为钛合金和钴铬合金,比较2种材料在28°预弯弧度时对矢状面重建的效果以及螺钉拔出应力的差异.进一步探讨当预弯弧度为40°时,钛合金棒对矢状面重建的影响.结果 建立了完整的AIS仿真三维有限元模型,模型包括691 271个单元.其中实体单元、壳单元以及仿真单元计数分别为667 459、62 838和575.在28°预弯弧度下,钴铬合金比钛合金能够更好地矫正AIS矢状面后凸,但是钴铬棒组螺钉拔出应力显著增加.当预弯弧度为40°时,钛合金棒对矢状面后凸矫正效果显著优于预弯弧度为28°时,同时螺钉拔出应力显著增加.结论 采用强度较大的钴铬合金棒及适当加大矫形棒预弯弧度有助于矢状面力线的恢复,但也会导致螺钉拔出应力增加.
    • 摘要: 明拓集团铬业科技有限公司成立于2011年,位于内蒙古包头市九原区工业园区,注册资本4.7亿元,现有职工400余人。投资建设100万吨/年铬合金循环产业园项目,是国内第一个引进欧洲奥图泰集团的全新技术进行铬合金产业升级的企业。成立7年来,在董事长陶静的带领下,秉承"人本自然,科技领先,循环经济,绿色发展"的核心经营理念,致力于运用清洁化、节约化、智能化技术打造中国冶金工业的标杆。
    • 刘慧(译)1
    • 摘要: 早在20世纪70年代早期,弗纳·潘顿就想给他设计的座椅雕塑做一个镜面的表面。然而直到现在,这种铬合金效果在技术上才真正可行。Panton Chrome悬臂椅由于在不同的涂层中应用了金属材料,因而成为一件闪闪发光而又坚固的镜面物品。Panton Glow特别款座椅也同样引人注目,在这个款式的椅子中,涂层中的闪光颜料使这件热门作品在黑暗中散发出蓝色的光芒。Vitra公司的这两款座椅分别从2018年的3月和6月开始发售。
    • 陈熙; 程辉; 李秀容
    • 摘要: Objective To compare the fracture resistance of the Co-Cr metal-ceramic crowns with four different marginal types.Methods A total of eighty Co-Cr metal-ceramic crowns were separated into four groups according to the four different marginal types.The first group was crowns with its metal framework extending to the facial margin of the shoulder.The second was crowns with its metal frame-work extending to the middle of the shoulder.The third was crowns with its metal framework endingwith the axiogingival line angle of the shoulder.The last group was crowns with the metal frameworkextending to the 1 mm coronal to the axiogingival line angle of the shoulder.Each group had 20 speci-mens,which were kept in a bath of artificial saliva at 37 °CC for 24 hours after cemented,followed by beingsubjected to Instron1342 testing machine.Each specimen was loaded at a speed of 1 mm/min,paralleledto the axis of the specimen until marginal fracture occurred.The loads at fracture were recorded.Results Group 2 obtained the largest fracture load (P<0.05);Group 4 got the smallest (P<0.05);Inaddition,there was no statistically significant difference between Group 1 and Group 3 (P> 0.05).Conclusions The metal-ceramic crowns with the metal framework extending to the middle of the shouldershows the largest fracture load;the metal-ceramic crowns with the metal framework extending to the1 mm coronal to the axiogingival line angle of the shoulder demonstrate the smallest load;the fracture re-sistance of the Co-Cr metal-ceramic crowns with four different marginal types in this study can all satisfythe normal biting forces.%目的 研究4种不同冠边缘形式的钴铬合金金属烤瓷冠的强度. 方法 按照4种不同的冠边缘形式制作4组钴铬合金烤瓷冠,其中第1组金属基底冠止于肩台唇侧边缘,第2组止于肩台唇侧中部,第3组止于肩台与轴壁交角,第4组止于肩台与轴壁交角冠方1 mm处.将粘固后的4组样本保存于37°C的人工唾液中24 h后,在Instron1342万能材料测试机上以1 mm/min的速度对样本施加平行于样本长轴的压力,直至样本边缘颈部崩瓷,记录并得出每个样本崩瓷时所承受的载荷力值. 结果 第2组样本崩瓷时所受平均载荷力值最大(P<0.05);第4组样本崩瓷时所受平均载荷力值最小(P<0.05);第1组与第3组的载荷力值间比较,差别无统计学意义(P>0.05). 结论 金属基底冠止于肩台唇侧中部的金属烤瓷冠崩瓷时的所受载荷力值最大;金属基底冠唇侧止于肩台与轴壁交角冠方l mm处且颈部应用肩台瓷的金属烤瓷冠所受载荷力值最小.但4种不同冠边缘形式的钴铬合金烤瓷冠都能满足正常的咬合功能需要.
    • 马兰; 吴乐乐; 李风兰
    • 摘要: 目的:评价活动义齿不同清洁方式对于钴铬合金义齿铸造支架表面形貌的影响。方法离心铸造35个钴铬合金金属试样(15 mm×10 mm×1 mm)并镜面抛光,将试样按随机数字表法分为5组:A组为对照组,在蒸馏水中浸泡;B、C、D、E组为实验组,B组牙刷+蒸馏水刷洗2 min,C组牙刷+牙膏刷洗2 min,D组Poli-dent清洁片浸泡5 min,E组假牙清洁片浸泡5 min+牙刷刷洗2 min,重复该处理过程180个循环。使用粗糙度测试仪测试处理前后试样表面粗糙度值(Ra),扫描电子显微镜(SEM)观察处理前后试样表面形貌的变化。结果①不同方式处理前后A组和D组Ra分别为:(0.0038±0.0020/0.0042±0.0013)(0.0051±0.0017/0.0050±0.0014),差异均无统计学意义(P>0.05);B组、C组和E组处理前后表面Ra均增加,分别为(0.0037±0.0010/0.0376±0.0033)、(0.0043±0.0008/0.1852±0.0536)(0.0055±0.0014/0.0145±0.0012),差异均有统计学意义(均P<0.05)。②不同方式处理前后各组间Ra比较:处理前各组间Ra差异无统计学意义(P>0.05);不同方式处理后,与A组比较,D组Ra虽稍增加,差异无统计学意义(均P>0.05), B组、C组、E组较A组Ra明显增加,且差异均有统计学意义(均P<0.01);B组、C组、E组两两之间比较,差异均有统计学意义(均P<0.01)。③不同清洁方式处理后,SEM观察A、B、D、E组试样表面无明显划痕,C组试样表面较处理前可见明显划痕。结论牙刷+牙膏清洁方式可明显增加钴铬合金义齿支架表面粗糙度且产生明显划痕,清洁片清洁方式不能引起表面粗糙度增加且不会产生划痕,牙刷+蒸馏水清洁方式、清洁片+牙刷清洁方式可稍增加表面粗糙度但不会产生划痕。%Objective To evaluate different cleaning methods on the surface of cobalt-chromium (Co-Cr) alloy framework of removable denture. Methods Thirty-five Co-Cr alloy samples (15 mm×10 mm×1 mm) were established by centrifugal casting and mirror polishing. All samples were randomly divided into 5 groups:group A was included as the control group, which was immersed in distilled water; groups B, C, D and E were included as the study group. Group B was brushed with toothbrush+distilled water for 2 min. Group C was brushed with toothbrush+toothpaste for 2 min. Group D was immersed in Polident solution for 5 min. Group E was immersed in Polident solution for 5 min and brushed for 2 min. All the process was repeated 180 cycles. A roughness analyzer was used to measure the sur-face roughness (Ra) of the samples before and after the treatment. The surface changes of the samples were deter-mined by scanning electron microscope (SEM) before and after the treatment. Results ①The Ra in groups A and D before and after the treatment were (0.003 8 ± 0.002 0/0.004 2±0.001 3) and (0.005 1 ± 0.001 7/0.005 0 ± 0.001 4), respectively, and the difference was not statistically significant ( P>0.05). The Ra in groups B, C and E before and after the treatment were all increased, which were (0.003 7±0.001 0/0.037 6±0.003 3), (0.004 3±0.000 8/0.185 2±0.053 6) and (0.005 5 ±0.001 4/0.014 5 ±0.001 2), respectively, and the differences were statistically significant ( P0.05). After different treatments, the Ra of the samples was not all the same. The Ra in group D was slightly increased than that in group A (control group), and the difference was not statistically significant (all P>0.05). The Ra in groups B, C and E were significantly increased than that in group A, and the dif-ferences were statistically significant (all P<0.01). ③After treatment by the use of different cleaning methods, no sig-nificant scratches on the sample surface in groups A, B, D, and E were found by SEM. Significant scratches were found on the sample surface in group C compared with that before the treatment. Conclusion Brushing with tooth-brush+toothpaste may significantly increase Ra of Co-Cr alloy framework of denture and cause significant scratches. Polident solution may not increase Ra or cause scratches. Both of brushing with distilled water and brushing with Poli-dent solution may slightly increase Ra but may not cause scratches.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号