WO2016054816A1 - 一种粗糙表面金刚石颗粒制作方法 - Google Patents

一种粗糙表面金刚石颗粒制作方法 Download PDF

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WO2016054816A1
WO2016054816A1 PCT/CN2014/088338 CN2014088338W WO2016054816A1 WO 2016054816 A1 WO2016054816 A1 WO 2016054816A1 CN 2014088338 W CN2014088338 W CN 2014088338W WO 2016054816 A1 WO2016054816 A1 WO 2016054816A1
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diamond particles
alloy powder
rough
diamond
graphite container
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PCT/CN2014/088338
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French (fr)
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陈铮
李建林
李淑云
李立
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河南飞孟金刚石工业有限公司
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Priority to PCT/CN2014/088338 priority Critical patent/WO2016054816A1/zh
Publication of WO2016054816A1 publication Critical patent/WO2016054816A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/02—Elements
    • C30B29/04—Diamond

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  • the invention relates to a method for producing rough surface diamond particles.
  • Diamond micropowder has high hardness, high wear resistance and good corrosion resistance. These excellent properties have made it the darling of grinding and polishing at the beginning of its birth. Natural diamonds, commonly known as diamonds, have been the most expensive gemstones for centuries, symbolizing nobleness, beauty, holiness and permanence. However, the beautiful colors of beautiful diamonds are inseparable from grinding and polishing. In the early days, people tried to use other materials to achieve the polishing of diamonds. Just because the diamonds were hard and corrosion-resistant, it was said that the diamonds and powders were born. After entering the industrial age, diamond micropowder has not only been used in diamond polishing, but has been widely used in various fields of the national economy.
  • diamond micropowder is made into soft grinding discs and fine grinding discs are used for surface polishing of stone materials; in the wood industry, precision grinding wheels made of diamond micropowder are used for finishing woodworking tools; in the automotive industry, diamond powder is made of diamond powder. Grinding strips are used for the machining of cylinder bores, crankshaft bores, connecting rod bores and other parts.
  • the diamond composite piece made of diamond micropowder is the tooth of the drill bit; in the machining of the machine, the diamond composite piece made of the diamond micropowder replaces the traditional hard alloy and becomes the blade edge; in the metal processing, the diamond micropowder becomes the metal surface precision polishing. Excellent material. Therefore, diamond micropowder is widely used in many fields. However, with the continuous advancement of technology, more and more high demands are placed on the processing of grinding and polishing, mainly in two points: high efficiency and high precision.
  • the traditional diamond micropowder is a single crystal structure, the surface of the particles is relatively smooth, the number of cutting edges is small, and the cutting force is weak; the cutting edge of a single particle is large and hard, and the scratch is severe; at the same time, it is broken along the cleavage surface when impacted by an external force, and the particle size is fast. It becomes smaller and has a shorter grinding life.
  • hard disks and magnetic heads require very high surface finish and flatness; in the optical communication, the roughness Ra of the fiber connector end face is nanometer, and the grinding and polishing of the sapphire wafer in the LED industry requires not only strong cutting force, Moreover, the surface of the wafer is required to be free of scratches, which requires the conventional single crystal diamond fine powder to be realized.
  • the technical problem to be solved by the present invention is to provide a method for manufacturing rough surface diamond particles, which simplifies the process to improve production efficiency.
  • a method for manufacturing rough surface diamond particles comprising the following steps
  • step 2) placing the mixture obtained in step 1) into a graphite container and compacting
  • the graphite container is placed in a vacuum furnace and heated to 900 to 1250 ° C, kept for 60 to 180 minutes, cooled to room temperature, and the graphite container is taken out;
  • the mixed sintered material is taken out from the graphite container, and after dissolving the alloy powder with acid, the diamond particles are separated therefrom, and the diamond particles are subjected to different strengths after being washed by water and dried by grading drying or drying.
  • the mesh is classified to obtain diamonds of rough surfaces of different particle sizes.
  • step 1) the mass ratio of the diamond particles to the nickel-phosphorus alloy powder is 2:1 to 1:1.
  • the mass ratio of diamond particles to iron-boron alloy powder is 2:1 ⁇ 1:1.
  • the nickel phosphorus alloy powder has a nickel content of 80 to 90% by weight and a balance of phosphorus.
  • the iron-boron alloy powder has an iron content of 95 to 98% by weight and a balance of boron.
  • the diamond particles have a particle diameter of 0.1 ⁇ m to 900 ⁇ m.
  • the process of the invention is simple, and the obtained rough surface diamond particles have a particle size range of 0.1 ⁇ m to 900 ⁇ m, and the diamond surface has obvious corrosion pits and high temperature and high pressure original diamond or broken original diamond surface.
  • this rough surface diamond can be single crystal or polycrystalline; the treated black polycrystalline diamond has a rough surface, still has conductive properties, and maintains its black characteristics; it can meet the needs of different industries.
  • Figure 1 shows a diamond particle synthesized by the standard HPHT process.
  • Figure 2 shows another diamond particle synthesized by the standard HPHT process.
  • Fig. 3 is a rough surface diamond particle synthesized by the present invention.
  • Fig. 4 shows another surface rough diamond particle synthesized in the present invention.
  • a method for manufacturing rough surface diamond particles comprising the following steps:
  • step 2) placing the mixture obtained in step 1) into a graphite container and compacting
  • the mixed sintered material is taken out from the graphite container, and after dissolving the alloy powder with acid, the diamond particles are separated therefrom, and the diamond particles are subjected to different strengths after being washed by water and dried by grading drying or drying.
  • the mesh is classified to obtain a rough surface diamond having a diamond particle size ranging from 5 ⁇ m to 30 ⁇ m.
  • a method for manufacturing rough surface diamond particles comprising the following steps:
  • step 2) placing the mixture obtained in step 1) into a graphite container and compacting
  • the graphite container is placed in a vacuum furnace and heated to 1 00 ° C, kept for 120 minutes, cooled to room temperature, and the graphite container is taken out;
  • the mixed sintered material is taken out from the graphite container, and after dissolving the alloy powder with acid, the diamond particles are separated therefrom, and after being washed and dried by water, sieved with a 120/140 mesh sieve to obtain a rough surface 120/ 140 mesh diamond particles.
  • a method for manufacturing rough surface diamond particles comprising the following steps:
  • step 2) placing the mixture obtained in step 1) into a graphite container and compacting
  • the graphite container is placed in a vacuum furnace and heated to 1250 ° C, kept for 150 minutes, cooled to room temperature, and the graphite container is taken out;
  • the mixed sintered material is taken out from the graphite container, and after dissolving the alloy powder with acid, the diamond particles are separated therefrom, and the diamond particles are classified according to different strengths by washing with water and by step drying to obtain different particle sizes.
  • the rough surface is black conductive diamond particles with a particle size ranging from 1 ⁇ m to 40 ⁇ m.
  • Diamond particles before treatment are shown in Figures 1 and 2, and the diamond particles obtained by the treatment of Examples 1-3 are shown in Figures 2 and 3.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Powder Metallurgy (AREA)

Abstract

本发明公开了一种粗糙表面金刚石颗粒制作方法，特别是生产一种粗糙表面导电的黑色多晶金刚石制作方法。包括以下步骤：1）将金刚石颗粒与镍磷合金粉末或铁硼合金粉末混合均匀；2）将步骤1）得到的混合物放入石墨容器中并压紧；3）将石墨容器放入真空炉中加热至800到1250℃，保持 60 ~180min后冷却至室温，将石墨容器取出；4）将混合的烧结物料从石墨容器中取出，用酸处理溶解合金粉后，把金刚石颗粒从其中分离出来，在通过清水清洗和通过分级干燥或干燥后打筛将金刚石颗粒进行按不同力度后目数分类，得到不同粒度的粗糙表面的金刚石。

Description

一种粗糙表面金刚石颗粒制作方法
技术领域
本发明涉及 一种粗糙表面金刚石颗粒制作方法 。
背景技术
金刚石微粉具有高硬度、高耐磨性和良好的耐腐蚀性能，这些优良特性使其在诞生之初就成为研磨与抛光领域的宠儿。天然金刚石俗称钻石，多少世纪以来一直是一种最昂贵的宝石，象征着高贵、美丽、圣洁与永久，然而美丽的钻石所散发的绚丽色彩却离不开研磨与抛光。初期，人们试图用其它材料实现钻石的抛光，只因钻石既硬又耐腐蚀，可谓刀枪不入，这时金刚石微粉应运而生了。进入工业时代以后，金刚石微粉已不仅仅用于钻石抛光方面，她已广泛用于国民经济的各个领域。例如在石材行业，金刚石微粉做成软磨片、精磨片用于石材的表面抛光；木材行业中，金刚石微粉做成的精密砂轮用于木工刀具的修整；汽车行业中，金刚石微粉做成的绗磨条用于缸孔、曲轴孔、连杆孔以及其它零件孔类的加工；光学领域中，金刚石微粉做成的精磨片、超精磨片用于光学镜头的加工；石油开采及地质勘探中，金刚石微粉做成的金刚石复合片是钻头的牙齿；机床加工中，金刚石微粉做成的金刚石复合片替代传统的硬质合金，成为刀头利刃；金属加工中，金刚石微粉成为金属表面精密抛光的优良材料。因此，金刚石微粉在多个领域均得到广泛应用。但是，随着科技的不断进步，对研磨抛光的加工提出了越来越高的要求，主要表现在两点：高效与高精。传统的金刚石微粉是单晶结构，颗粒表面较为平滑，切削刃数量少，切削力弱；单个颗粒切削刃大而硬，划伤严重；同时受到外力冲击时沿解理面碎裂，粒度很快变小，研磨寿命短。IT行业中，硬盘及磁头需要非常高的表面光洁度和平整度；光通讯中光纤连接器端面抛光后粗糙度Ra值在纳米级，LED行业中蓝宝石晶片的研磨抛光不但要求很强的切削力，而且要求晶片表面无划痕，这些要求传统的单晶金刚石微粉已经无法实现。
美国专利 US12560899 ，申请日为 2009.09.16 ，公开了 一种不规则的表面，其中的粒子的表面粗糙度小于约 0.95 磨料颗粒。一种生产方法改性磨料颗粒，其中包括提供多个磨料颗粒， 所述 粒子上提供无功的涂层，加热 所述 包覆的颗粒 ；和恢复修改磨料颗粒 ，然而其制作工艺复杂，工业生产效率低。
发明内容
本发明要解决的技术问题是提供了一种粗糙表面金刚石颗粒制作方法，简化工艺以提高生产效率。
本发明的技术方案是：
一种粗糙表面金刚石颗粒制作方法，包括以下步骤
1）将金刚石颗粒与镍磷合金粉末或金刚石颗粒或铁硼合金粉末混合均匀；
2）将步骤1）得到的混合物放入石墨容器中并压紧；
3）将石墨容器放入真空炉中加热至900到1250℃，保持60~180min后冷却至室温，将石墨容器取出；
4）将混合的烧结物料从石墨容器中取出，用酸处理溶解合金粉后，把金刚石颗粒从其中分离出来，在通过清水清洗和通过分级干燥或干燥后打筛将金刚石颗粒进行按不同力度后目数分类，得到不同粒度的粗糙表面的金刚石。
进一步，步骤1）中，金刚石颗粒和镍磷合金粉末的质量比为2:1~1:1 ，金刚石颗粒和铁硼合金粉末质量比为2:1~1:1。
进一步，所述镍磷合金粉末中镍含量为80~90wt%，余量磷。
进一步，所述铁硼合金粉末中铁含量为95~98wt%，余量硼。
进一步，金刚石颗粒粒径0.1μm至900μm。
与现有技术相比，本发明工艺简单，得到的粗糙表面金刚石颗粒粒径范围大0.1μm~900μm，金刚石表面具有明显的腐蚀坑与高温高压原生长的金刚石或经过破碎的原生长的金刚石表面有明显区别，这种粗糙表面金刚石可以是单晶的或多晶的；处理后的黑色多晶金刚石，其表面粗糙，仍然具有导电的特性，保持其黑色特点；可以满足不同行业的需求。
附图说明
图 1 为 标准 HPHT 工艺 合成的 一种 金刚石颗粒。
图 2为 标准 HPHT 工艺 合成的另 一种 金刚石颗粒。
图 3 为本发明 合成 的一种 表面粗糙 金刚石颗粒。
图 4 为本发明 合成 的另一种 表面粗糙 金刚石颗粒。
具体实施方式
下面 结合附图 通过具体实施例对本发明做进一步的描述。
实施例1
一种粗糙表面金刚石颗粒制作方法，包括以下步骤：
1）将5-30μm金刚石颗粒与镍磷合金粉末混合均匀；金刚石颗粒和镍磷合金粉末的质量比为2:1，所述镍磷合金粉末中镍含量为75wt%，余量磷；
2）将步骤1）得到的混合物放入石墨容器中并压紧；
3）将石墨容器放入真空炉中加热至1100℃，保持180min后冷却至室温，将石墨容器取出；
4）将混合的烧结物料从石墨容器中取出，用酸处理溶解合金粉后，把金刚石颗粒从其中分离出来，在通过清水清洗和通过分级干燥或干燥后打筛将金刚石颗粒进行按不同力度后目数分类，得到粗糙表面的金刚石，金刚石颗粒粒径范围为5μm至30μm。
实施例 2
一种粗糙表面金刚石颗粒制作方法，包括以下步骤：
1）将120/140目（140μm 到200μm）的金刚石颗粒与铁硼合金粉末混合均匀；金刚石颗粒和铁硼合金粉末质量比为1：1，所述铁硼合金粉末中铁含量为98wt%，余量硼；
2）将步骤1）得到的混合物放入石墨容器中并压紧；
3）将石墨容器放入真空炉中加热至 1 1 00 ℃，保持120min后冷却至室温，将石墨容器取出；
4）将混合的烧结物料从石墨容器中取出，用酸处理溶解合金粉后，把金刚石颗粒从其中分离出来，在通过清水清洗和干燥后用120/140目的筛子打筛得到粗糙表面的120/140目金刚石颗粒。
实施例 3
一种粗糙表面金刚石颗粒制作方法，包括以下步骤：
1）将1μm到40μm黑色导电的金刚石颗粒与铁硼合金粉末混合均匀；金刚石颗粒和铁硼合金粉末的质量比为2:1，所述铁硼合金粉末中铁含量为95wt%，余量硼；
2）将步骤1）得到的混合物放入石墨容器中并压紧；
3）将石墨容器放入真空炉中加热至1250℃，保持150min后冷却至室温，将石墨容器取出；
将混合的烧结物料从石墨容器中取出，用酸处理溶解合金粉后，把金刚石颗粒从其中分离出来，在通过清水清洗和通过分级干燥将金刚石颗粒进行按不同力度后目数分类，得到不同粒度的粗糙表面黑色导电的金刚石颗粒，粒径范围为1μm到40μm。
处理前的金刚石颗粒如图1和图2所示，经过实施例1-3处理得到的金刚石颗粒如图2和3所示。

Claims (1)

1、一种粗糙表面金刚石颗粒制作方法，其特征在于，包括以下步骤：
1）将金刚石颗粒与镍磷合金粉末或铁硼合金粉末混合均匀；
2）将步骤1）得到的混合物放入石墨容器中并压紧；
3）将石墨容器放入真空炉中加热至900到1250℃，保持 60 ~180min后冷却至室温，将石墨容器取出；
4）将混合的烧结物料从石墨容器中取出，用酸处理溶解合金粉后，把金刚石颗粒从其中分离出来，在通过清水清洗和通过分级干燥或干燥后打筛将金刚石颗粒进行按不同力度后目数分类，得到不同粒度的粗糙表面的金刚石。
2、根据权利要求1所述的一种粗糙表面金刚石颗粒制作方法，其特征在于，步骤1）中，所述金刚石颗粒和镍磷合金粉末的质量比为2:1~1 :1 ，所述金刚石颗粒和铁硼合金粉末质量比为2:1~1 :1 。
3、根据权利要求2所述的一种粗糙表面金刚石颗粒制作方法，其特征在于，所述镍磷合金粉末中镍含量为80~90wt%，余量磷。
4、根据权利要求2所述的一种粗糙表面金刚石颗粒制作方法，其特征在于，所述铁硼合金粉末中铁含量为95~98wt%，余量硼。
5、根据权利要求1~4任一项所述的一种粗糙表面金刚石颗粒制作方法，其特征在于，金刚石颗粒粒径0.1μm至900μm。
6、如权利要求 1-4 任一项所述的 一种粗糙表面金刚石颗粒制作方法 制得的表面粗糙单晶金刚石颗粒。
7、如权利要求 1-4 任一项所述的 一种粗糙表面金刚石颗粒制作方法 制得的表面粗糙多晶金刚石颗粒。
8、如权利要求 1-4 任一项所述的 一种粗糙表面金刚石颗粒制作方法 制得的表面粗糙导电黑色多晶金刚石颗粒。
PCT/CN2014/088338 2014-10-11 2014-10-11 一种粗糙表面金刚石颗粒制作方法 WO2016054816A1 (zh)

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US10246335B2 (en) 2016-05-27 2019-04-02 Baker Hughes, A Ge Company, Llc Methods of modifying surfaces of diamond particles, and related diamond particles and earth-boring tools
CN111994904A (zh) * 2020-09-15 2020-11-27 河南工业大学 一种金刚石表面制备石墨烯的方法
CN113060725A (zh) * 2021-04-01 2021-07-02 河南博锐新材料有限公司 一种金刚石表面毛化处理方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN111994904A (zh) * 2020-09-15 2020-11-27 河南工业大学 一种金刚石表面制备石墨烯的方法
CN113060725A (zh) * 2021-04-01 2021-07-02 河南博锐新材料有限公司 一种金刚石表面毛化处理方法

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