CN1100016A - 铁铂单相合金超微粒子的制备 - Google Patents

铁铂单相合金超微粒子的制备 Download PDF

Info

Publication number
CN1100016A
CN1100016A CN 93115803 CN93115803A CN1100016A CN 1100016 A CN1100016 A CN 1100016A CN 93115803 CN93115803 CN 93115803 CN 93115803 A CN93115803 A CN 93115803A CN 1100016 A CN1100016 A CN 1100016A
Authority
CN
China
Prior art keywords
alloy
alloy particles
phase
phase alloy
iron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 93115803
Other languages
English (en)
Inventor
陈健
孙秀魁
杨明川
徐坚
魏文铎
胡壮麒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Metal Research of CAS
Original Assignee
Institute of Metal Research of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Metal Research of CAS filed Critical Institute of Metal Research of CAS
Priority to CN 93115803 priority Critical patent/CN1100016A/zh
Publication of CN1100016A publication Critical patent/CN1100016A/zh
Pending legal-status Critical Current

Links

Images

Abstract

铁铂单相合金超微粒子的制备技术，采用气相蒸 镀的办法，严格控制母合金的成分范围(原子百分比) Fe50，Pd50，其特征在于：(1)蒸镀在氦气氛下进行， 气压控制在0.5～10KPa；(2)蒸发温度控制在1823 ～2403K。使用本发明提供方法制备的铁铂合金粉， 没有第二相产生，且粒径分布范围在10～23mm之 间。

Description

本发明涉及铁铂合金的制备，特别是铁铂单相合金超微粒子的制备技术。
IGA[A.IGA    and    Y.TAWARA    Jpn    J.AppL    Phs,8(1969)1057]等人曾用气相蒸镀法在15Torr    Ar气中蒸发Fe50Pd50母合金，由于选用的是Ar气，且压力偏大，使蒸气不能均匀扩散冷凝，产物的成分发生变化为Fe57Pd43，并形成了第二相，粒径范围也较宽在30～70nm。
本发明的目的在于提供一种单相铁铂合金超微粒子的制备技术。
本发明所提供的铁铂单相合金超微粒子的制备技术，采用气相蒸镀的办法，严格控制母合金的成份范围（原子百分比）Fe    50，Pd    50，其特征在于：
（1）蒸镀在氦气氛下进行，气压控制在0.5～10KPa；
（2）蒸发温度控制在1823～2403K。
使用本发明提供方法制备的铁铂合金粉，没有第二相产生，且粒径分布范围在10～23nm之间，下面通过实施例详述本发明。
附图1为不同温度下蒸发Fe50    Pd50母合金所得产物的x射线衍射结果；
附图2为在5KPa    He气中蒸发不同成分的Fe    Pd合金产物的x射线衍射图。
附图3Fe50    Pd50合金超微粒子和Fe65    Pd55合金超微粒子放置一年前后的x射线衍射结果，（a)(b)为Fe65    Pd33(c)(d)为Fe50    Pd50；
附图4为平均粒径在25nm的Fe超微粒子与平均粒径为15nm的Fe50Pd50合金超微粒子在空气中加热的DSC曲线。
实施例
母合金成分为Fe50    Pd50(at%)，可先熔炼成母合金或将原料（锉屑）直接混合均匀后放入W舟，在1550K均匀化3分钟，再升温蒸发。图1是不同温度下蒸发所得产物的x射线衍射结果，惰性气体为He，压力为5KPa，温度分别为（a)1893K,(b)2043K,(c)2173K,(d)2373K,所得产物都是单相，其成分经晶格常数测量以及EDAX分析，与母合金成分相同。
图2是在5KPa    He气中蒸发不同成分的Fe-Pd合金的产物的x射线衍射图，蒸发温度为1873±30K，母合金成分为（a)Fe80    Pd20,(b)Fe70    Pd30,(c)Fe65    Pd35,(d)Fe50    Pd50,(e)Fe25    Pd75。可见蒸发Fe50    Pd50母合金后所得产物为单相，经晶格常数测量和EDAX分析，与母合金成分相同，而当成分不是Fe50    Pd50时，则发生分馏，甚至产生第二相粒子，He气压力为0.5～10KPa时，蒸发Fe50    Pd50母合金都可得到单相产物。
图3是Fe50    Pd50合金超微粒子和Fe65    Pd35合金超微粒子放置一年前后的x射线衍射结果，(a)(b)为Fe65    Pd35，(c)(d)为Fe50    Pd50，可见Fe50    Pd50合金超微粒子变化不大，而Fe65    Pd35超微粒子则发生了较为显著的氧化。
图4是平均粒径为25nm的Fe超微粒子与平均粒径为15nm的Fe50    Pd50合金超微粒子在空气中加热的DSC曲线，到700K时，Fe超微粒子已完全氧化，成为红褐色，而Fe50    Pd50合金超微粒子则仍保持为黑色粉末，说明没有彻底氧化，其抗氧化性能较Fe超微粒子或富Fe的多相合金超微粒子得到显著提高。
所得超微粒子经电镜观察基本上为球状，粒径分布较窄，平均粒径可控制在10～23nm之间。

Claims (1)

1、铁铂单相合金超微粒子的制备技术，采用气相蒸镀的办法，严格控制母合金的成份范围(原子百分比)Fe    50，Pd    50，其特征在于：
(1)蒸镀在氦气氛下进行，气压控制在0.5～10KPa；
(2)蒸发温度控制在1823～2403K。
CN 93115803 1993-09-11 1993-09-11 铁铂单相合金超微粒子的制备 Pending CN1100016A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93115803 CN1100016A (zh) 1993-09-11 1993-09-11 铁铂单相合金超微粒子的制备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93115803 CN1100016A (zh) 1993-09-11 1993-09-11 铁铂单相合金超微粒子的制备

Publications (1)

Publication Number Publication Date
CN1100016A true CN1100016A (zh) 1995-03-15

Family

ID=4991338

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 93115803 Pending CN1100016A (zh) 1993-09-11 1993-09-11 铁铂单相合金超微粒子的制备

Country Status (1)

Country Link
CN (1) CN1100016A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100457340C (zh) * 2006-07-20 2009-02-04 同济大学 一种单分散铁铂纳米合金粒子的制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100457340C (zh) * 2006-07-20 2009-02-04 同济大学 一种单分散铁铂纳米合金粒子的制备方法

Similar Documents

Publication Publication Date Title
Indris et al. Nanocrystalline oxide ceramics prepared by high-energy ball milling
Xia et al. Improved magnetic properties of FeSiCr amorphous soft magnetic composites by adding carbonyl iron powder
Wang et al. The sintering behavior of ultra-fine Mo–Cu composite powders and the sintering properties of the composite compacts
Lee et al. Synthesis of Mn–Al alloy nanoparticles by plasma arc discharge
Han et al. Microwave-absorption properties of Fe (Mn)/ferrite nanocapsules
CN110098029A (zh) 软磁性合金及磁性部件
Morales et al. Magnetic properties of uniform γ–Fe2O3 nanoparticles smaller than 5 nm prepared by laser pyrolysis
CN1100016A (zh) 铁铂单相合金超微粒子的制备
CN108865062A (zh) 一种电磁波吸收剂及其制备方法
Wang et al. Improvement in core losses for FeSiAl soft magnetic composites induced by powder annealing treatment
Inagaki et al. Apatite/titanium composite coatings on titanium or titanium alloy by RF plasma-spraying process
TW201231701A (en) Cu-ga target and method for manufacturing same, as well as light-absorbing layer formed from cu-ga alloy film, and cigs solar cell using light-absorbing layer
Lee et al. Aluminium oxide dispersion strengthened copper produced by thermochemical process
US5152959A (en) Sinterless powder metallurgy process for manufacturing composite copper strip
CN112383980A (zh) 一种复合发热材料及其制备方法和用途
CN115368133B (zh) 一种高温陶瓷粉末的制备方法及应用
Dominguez et al. Liquidlike sintering behavior of nanometric Fe and Cu powders: Experimental approach
Tokoi et al. Phase Control of Ti–Fe Nanoparticles Prepared by Pulsed Wire Discharge
Suwa et al. Synthesis of Ni–Cu nanoparticles by pulsed wire discharge and their compositional distribution
DE3738738C1 (en) Powder-metallurgical process for producing targets
Feng et al. Carbon monoxide chemisorption on Cu covered Ni (111) surfaces
CN109338249A (zh) 一种铁基非晶软磁合金材料及制备方法
EP2164656B1 (en) The method of synthesis of the iron nanopowder with the protective oxidic coat from natural and synthetic nanopowdered iron oxides and oxihydroxides
KR100707855B1 (ko) 분말사출성형용 금속 미세입자 피드스톡의 제조방법
KR20040072991A (ko) 밀스케일을 이용한 Ｆｅ계 나노분말의 제조방법

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C01 Deemed withdrawal of patent application (patent law 1993)
WD01 Invention patent application deemed withdrawn after publication