KR20170131402A - 다결정 텅스텐 소결체 및 다결정 텅스텐 합금 소결체 그리고 그것들의 제조 방법 - Google Patents
다결정 텅스텐 소결체 및 다결정 텅스텐 합금 소결체 그리고 그것들의 제조 방법 Download PDFInfo
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Abstract
Description
도 2 는, 종래법 (분말 야금법과 압연의 조합) 으로 제작한 W 소결체의 조직 사진의 일례를 나타낸다.
도 3 은, 종래법 (용해법) 으로 제작한 W 소결체의 조직 사진의 일례를 나타낸다.
도 4 는, 본원 발명의 W 합금 (W : 50 질량%, Mo : 50 질량%) 소결체의 조직 사진의 일례를 나타낸다.
도 5 는, 도 4 의 본원 발명의 W 합금 (W : 50 질량%, Mo : 50 질량%) 소결체에 대해 측정 (사용 소프트 : Image J) 한 포어 검출 결과의 일례를 나타낸다. 본 포어 검출 결과에서는, 포어율은 검출 한계 이하였다.
도 6 은, 종래법 (HIP 법) 으로 제작한 W 합금 (W : 50 질량%, Mo : 50 질량%) 소결체의 조직 사진의 일례를 나타낸다.
도 7 은, 도 6 의 종래법 (HIP 법) 으로 제작한 W 합금 (W : 50 질량%, Mo : 50 질량%) 소결체에 대해 측정 (사용 소프트 : Image J) 한 포어 검출 결과의 일례를 나타낸다. 본 포어 검출 결과에서는, 포어율은 0.659 %area 였다.
Claims (15)
- 다결정 텅스텐 소결체에 있어서, 상기 소결체의 상대 밀도는 99 % 이상이고, 상기 소결체의 임의의 단면에서 측정한 포어율이 0.2 면적% 이하, 평균 결정 입경이 50 ㎛ 이하, 결정립의 평균 애스펙트비가 1 ∼ 2.5 인 고밀도이고 또한 미립 조직이며 이방성이 없는 다결정 텅스텐 소결체.
- 제 1 항에 있어서,
상기 포어율이 0.02 면적% ∼ 0.19 면적% 인 다결정 텅스텐 결정체. - 제 1 항에 있어서,
상기 포어율이 0.02 면적% ∼ 0.15 면적% 인 다결정 텅스텐 결정체. - 제 1 항에 있어서,
상기 평균 결정 입경이 0.8 ㎛ ∼ 33.4 ㎛ 인 다결정 텅스텐 결정체. - 제 1 항에 있어서,
상기 평균 결정 입경이 0.8 ㎛ ∼ 18.3 ㎛ 인 다결정 텅스텐 결정체. - 제 1 항에 있어서,
상기 평균 애스펙트비가 1.0 ∼ 2.2 인 다결정 텅스텐 결정체. - 제 1 항에 있어서,
상기 평균 애스펙트비가 1.0 ∼ 1.4 인 다결정 텅스텐 결정체. - 텅스텐을 25 질량% 이상 함유하는 다결정 텅스텐기 합금 소결체에 있어서, 그 텅스텐기 합금은, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo 및 Mn 중에서 선택되는 1 종 또는 2 종 이상의 합금 성분을 함유하는 텅스텐기 합금으로서, 상기 소결체의 상대 밀도는 99 % 이상이고, 상기 소결체의 임의의 단면에서 측정한 포어율이 0.2 면적% 이하, 평균 결정 입경이 50 ㎛ 이하, 결정립의 평균 애스펙트비가 1 ∼ 2.5 인 고밀도이고 또한 미립 조직이며 이방성이 없는 다결정 텅스텐기 합금 소결체.
- 제 8 항에 있어서,
상기 포어율이 0.02 면적% ∼ 0.19 면적% 인 다결정 텅스텐기 합금 소결체. - 제 8 항에 있어서,
상기 포어율이 0.02 면적% ∼ 0.15 면적% 인 다결정 텅스텐기 합금 소결체. - 제 8 항에 있어서,
상기 평균 결정 입경이 0.8 ㎛ ∼ 33.4 ㎛ 인 다결정 텅스텐기 합금 소결체. - 제 8 항에 있어서,
상기 평균 결정 입경이 0.8 ㎛ ∼ 18.3 ㎛ 인 다결정 텅스텐기 합금 소결체. - 제 8 항에 있어서,
상기 평균 애스펙트비가 1.0 ∼ 2.2 인 다결정 텅스텐기 합금 소결체. - 제 8 항에 있어서,
상기 평균 애스펙트비가 1.0 ∼ 1.4 인 다결정 텅스텐기 합금 소결체. - 평균 입경 50 ㎛ 이하의 텅스텐 입자로 이루어지는 원료 분말, 혹은, 평균 입경 50 ㎛ 이하의 텅스텐 입자 분말과 평균 입경 50 ㎛ 이하의 Ti, Zr, Hf, V, Nb, Ta, Cr, Mo 및 Mn 중에서 선택되는 1 종 또는 2 종 이상의 합금 성분 입자 분말을 배합한 원료 분말 혹은 그 압분 성형체를, 가압 소결 장치에 장입하고, 그 원료 분말 혹은 그 압분 성형체에 2.55 ㎬ 이상 13 ㎬ 이하의 가압력을 부가한 상태에서, 1200 ℃ 이상 융점 이하의 온도 범위에서 소결하는 것을 특징으로 하는 고밀도이고 또한 미립 조직이며 이방성이 없는 다결정 텅스텐 소결체 혹은 다결정 텅스텐기 합금 소결체의 제조 방법.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015060039 | 2015-03-23 | ||
| JPJP-P-2015-060039 | 2015-03-23 | ||
| JP2016051244A JP6677875B2 (ja) | 2015-03-23 | 2016-03-15 | 多結晶タングステン及びタングステン合金焼結体並びにその製造方法 |
| JPJP-P-2016-051244 | 2016-03-15 | ||
| PCT/JP2016/058713 WO2016152780A1 (ja) | 2015-03-23 | 2016-03-18 | 多結晶タングステン及びタングステン合金焼結体並びにその製造方法 |
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| KR20170131402A true KR20170131402A (ko) | 2017-11-29 |
| KR102373916B1 KR102373916B1 (ko) | 2022-03-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115505772A (zh) * | 2022-09-30 | 2022-12-23 | 武汉理工大学 | 一种超细钨合金材料的制备方法 |
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| WO2020195566A1 (ja) * | 2019-03-26 | 2020-10-01 | 日立金属株式会社 | V合金ターゲット |
| CN112760538B (zh) * | 2020-12-22 | 2022-04-12 | 宁波江丰电子材料股份有限公司 | 一种钒钨合金靶坯的制备方法 |
| CN113523273B (zh) * | 2021-06-17 | 2022-10-21 | 北京科技大学 | 多场耦合下快速制备超细晶纯钨材料的粉末冶金方法 |
| CN115615260B (zh) * | 2022-10-24 | 2024-04-19 | 大连理工大学 | 一种高密度高放热焓难熔高熵合金破片材料 |
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|---|---|---|---|---|
| CN115505772A (zh) * | 2022-09-30 | 2022-12-23 | 武汉理工大学 | 一种超细钨合金材料的制备方法 |
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| Publication number | Publication date |
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| KR102373916B1 (ko) | 2022-03-11 |
| WO2016152780A1 (ja) | 2016-09-29 |
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