CN101660077B - 铼钨丝发射材料及用途 - Google Patents

铼钨丝发射材料及用途 Download PDF

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CN101660077B
CN101660077B CN2009101839075A CN200910183907A CN101660077B CN 101660077 B CN101660077 B CN 101660077B CN 2009101839075 A CN2009101839075 A CN 2009101839075A CN 200910183907 A CN200910183907 A CN 200910183907A CN 101660077 B CN101660077 B CN 101660077B
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rhenium
powder
tungsten
lamp
emitting material
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CN101660077A (zh
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朱惠冲
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Foshan Ningyu Technology Co ltd
Zhu Huichong
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Abstract

本发明公开了一种铼钨丝发射材料及用途，主要由铼、钨组成。本发明产品工作性能稳定、使用寿命长、具有良好的玻璃封接性能、消除了材料脆性。主要应用于HID汽车氙气灯、陶瓷金卤灯及高强度气体放电灯等电极发射主杆及用于制备微波炉发射管发射灯丝、光波炉发射管发射灯丝、微波炉磁控管发射灯丝或光波炉磁控管发射灯丝。

Description

铼钨丝发射材料及用途
技术领域：
本发明涉及一种发射材料。
背景技术：
传统的铼钨丝电极主杆材料、发射灯丝一般为钍钨材料，在对电流的耐受性、工作稳定性等方面存在缺陷，使用寿命短，同时由于长期电流的轰击而出现与玻璃脱开而导致漏气的现象。而且由于钍是有放射性的元素，故采用钍钨材料在生产制造、产品使用等过程中不可避免地会人体产生危害。在2200℃高温碳化时极易发脆，导致废品率高，并且过程较难控制，最终检验也很难将废品完全挑出，产品可靠性也较低。
发明内容：
本发明的目的在于提供一种工作稳定、使用效果好的铼钨丝发射材料及用途。
本发明的技术解决方案是：
一种铼钨丝发射材料，其特征是：由下列重量百分比的成分组成：
铼                    0.1～40％
钨                    52～99.899％
钍                    0.001～4％
其他金属元素或合金    0～4％。
所述其他金属元素或合金是钇和/或镧，其用量百分比为0.001～4％。
一种铼钨丝发射材料在制备发射灯丝、电极发射主杆中的应用。
本发明产品有如下优点：
1.稳定及长的使用寿命
金属钨中添加了铼元素后，由于两者熔点相近，在同一加工温度下，其金相结构及纤维组织均远远优于钍钨丝。因为铼的熔点较高，比较接近金属钨的熔点，所以含铼电极主杆对电流的耐受性远高于后者，工作稳定且大大提高了工作寿命。
2.良好的玻璃封接性能
由于铼钨丝熔点较高，故在封接后工作后期中可显示出良好的高温性能，不会由于长期电流的轰击而出现与玻璃脱开而导致漏气的现象，提高了灯的可靠性。传统的钍钨丝材料则无法避免这个问题。
主要应用于HID汽车氙气灯、陶瓷金卤灯及高强度气体放电灯等电极发射主杆。及应用于微波炉、光波炉及大功率微波炉发射管与磁控管中发射灯丝的制造。
下面结合实施例对本发明作进一步说明。
具体实施方式：
实施例1：
(1)混粉：将铼粉0.4％(重量百分比)、钨粉99.595％(重量百分比)及钍粉0.005％(重量百分比)混合，制得到含铼合金粉；
(2)将步骤(1)得到的含铼合金粉压制，然后高温烧结(2300℃)或锤熔，并进一步煅打成棒料，再拉丝得铼钨丝发射材料。
实施例2：
混粉时，铼粉用量为21％(重量百分比)，钨粉用量为77％(重量百分比)及钍粉2％(重量百分比)，其他同实施例1。
实施例3：
混粉时，铼粉用量为38％(重量百分比)，钨粉用量为58％(重量百分比)及钍粉4％(重量百分比)，其他同实施例1。
实施例4：
混粉时，铼粉用量为25％(重量百分比)，钨粉用量为72％(重量百分比)及钍粉1％(重量百分比)，还加有钇粉(或镧粉或钇镧合金)2％(重量百分比)，其他同实施例1。
实施例5：
混粉时，铼粉用量为31％(重量百分比)，钨粉用量为65％(重量百分比)，还加有钇粉(或镧粉或钇镧合金)4％(重量百分比)，其他同实施例1。
实施例6：
混粉时，铼粉用量为35％(重量百分比)，钨粉用量为61.998％(重量百分比)及钍粉3％(重量百分比)，还加有钇粉(或镧粉或钇镧合金)0.002％(重量百分比)，其他同实施例1。
实施例7：
用铼酸铵或氧化铵代替铼粉，用仲钨酸铵或氧化钨代替钨粉，用氧化钍代替钍粉，用氧化钇代替钇粉(或用氧化镧代替镧粉)，混粉后，按常规合金制造方法，制得含铼合金粉。其余条件、步骤均可以分别与上述各实施例相同。
上述各实施例制得的产品用于制备HID汽车氙气灯、陶瓷金卤灯及高强度气体放电灯等电极发射主杆，或用于制备微波炉发射管发射灯丝、光波炉发射管发射灯丝、微波炉磁控管发射灯丝或光波炉磁控管发射灯丝。

Claims (2)

1.一种铼钨丝发射材料，其特征是：由下列重量百分比的成分组成：
铼        25～35％
钨        61.998～72％
钍        1～3％
钇和/或镧 0.002～2％。
2.一种权利要求1所述的铼钨丝发射材料在制备发射灯丝、电极发射主杆中的应用。
CN2009101839075A 2009-08-12 2009-08-12 铼钨丝发射材料及用途 Active CN101660077B (zh)

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EP3778939A1 (en) * 2012-05-29 2021-02-17 Kabushiki Kaisha Toshiba Method for producing a tungsten alloy part
CN102796931B (zh) * 2012-08-29 2014-05-07 朱惠冲 一种微波炉磁控管铼钨钇阴极的制备工艺
CN103956310A (zh) * 2014-04-25 2014-07-30 甘肃虹光电子有限责任公司 一种热发射阴极及其制作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389853A (en) * 1992-10-01 1995-02-14 General Electric Company Incandescent lamp filament with surface crystallites and method of formation
CN1217816A (zh) * 1997-02-24 1999-05-26 皇家菲利浦电子有限公司 高压金属卤化物灯

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389853A (en) * 1992-10-01 1995-02-14 General Electric Company Incandescent lamp filament with surface crystallites and method of formation
CN1217816A (zh) * 1997-02-24 1999-05-26 皇家菲利浦电子有限公司 高压金属卤化物灯

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