JP6526569B2 - プラズマ装置用部品及びその製造方法 - Google Patents
プラズマ装置用部品及びその製造方法 Download PDFInfo
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- JP6526569B2 JP6526569B2 JP2015550948A JP2015550948A JP6526569B2 JP 6526569 B2 JP6526569 B2 JP 6526569B2 JP 2015550948 A JP2015550948 A JP 2015550948A JP 2015550948 A JP2015550948 A JP 2015550948A JP 6526569 B2 JP6526569 B2 JP 6526569B2
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- 238000000034 method Methods 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000002245 particle Substances 0.000 claims description 199
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 164
- 238000002485 combustion reaction Methods 0.000 claims description 31
- 238000005245 sintering Methods 0.000 claims description 31
- 239000002002 slurry Substances 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000010419 fine particle Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 7
- 238000002441 X-ray diffraction Methods 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 3
- 239000010408 film Substances 0.000 description 117
- 239000000843 powder Substances 0.000 description 20
- 239000002994 raw material Substances 0.000 description 17
- 238000005530 etching Methods 0.000 description 12
- 230000009467 reduction Effects 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
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- 238000007873 sieving Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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Description
「膜密度(%)=100−気孔の面積率」
の算式により膜密度を算出する。膜密度の算出には、被膜組織の単位面積200μm×200μmの面積を分析するものとする。なお、膜厚が薄いときは、合計の単位面積が200μm×200μmとなるまで複数個所を測定するものとする。
燃焼フレーム型噴射装置を使用して衝撃焼結法により、アルミナ製基材(300mm×3mm)上に、表1示す条件で窒化アルミニウム被膜を形成してプラズマ装置用部品としての静電チャックを調製した。表1示す平均粒径を有する原料粉末としての窒化アルミニウム(AlN)粒子を分散したスラリーを調製するための溶媒は、いずれもエチルアルコールを使用した。また、使用した原料粉末はいずれも純度が99.9%以上である高純度窒化アルミニウム粒子を用いた。また、原料粉末としての窒化アルミニウム粒子としては、十分な粉砕および篩分け操作を実施して粒径が10μmを超えるような粗大粒子が無い原料粉末を使用した。
2…窒化アルミニウム被膜
3…基材
4…粒界が確認できない窒化アルミニウム粒子
5…粒界が確認できる窒化アルミニウム粒子
Claims (15)
- 金属またはセラミックスから成る基材と、この基材上の表面に形成された窒化アルミニウム被膜とから成るプラズマ装置用部品において、上記窒化アルミニウム被膜の厚さが10μm以上であり、膜密度が90%以上であり、窒化アルミニウム被膜の単位面積20μm×20μm中に存在する粒界が確認できる窒化アルミニウム粒子の面積率が0〜90%である一方、粒界が確認できない窒化アルミニウム粒子の面積率が10〜100%であり、上記窒化アルミニウム被膜をXRD分析したとき、Al 2 O 3 の最強ピークIcに対するAlNの最強ピークImの比(Im/Ic)が8以上であることを特徴とするプラズマ装置用部品。
- 前記基材が金属電極を内部に埋設したセラミックスから成り、この基材上の表面に前記窒化アルミニウム被膜を有していることを特徴とする請求項1に記載のプラズマ装置用部品。
- 前記窒化アルミニウム被膜は、衝撃焼結法により形成された窒化アルミニウム被膜であることを特徴とする請求項1乃至2のいずれか1項に記載のプラズマ装置用部品。
- 前記窒化アルミニウム被膜を形成する粒子全体の平均粒径が5μm以下であることを特徴とする請求項1乃至3のいずれか1項に記載のプラズマ装置用部品。
- 前記窒化アルミニウム被膜を形成する粒子は、粒径1μm以下の微粒子を含むことを特徴とする請求項1乃至4のいずれか1項に記載のプラズマ装置用部品。
- 前記窒化アルミニウム被膜は、膜厚が10〜200μmであり、膜密度が99%以上100%以下であることを特徴とする請求項1乃至5のいずれか1項に記載のプラズマ装置用部品。
- 前記粒界が確認できる窒化アルミニウム粒子の平均粒径が2μm以下であることを特徴とする請求項1乃至6のいずれか1項に記載のプラズマ装置用部品。
- 前記窒化アルミニウム粒子の平均粒径が0.05〜5μmであることを特徴とする請求項1乃至7のいずれか1項に記載のプラズマ装置用部品。
- 前記窒化アルミニウム被膜は、表面粗さRaが0.5μm以下に形成されていることを特徴とする請求項1乃至8のいずれか1項に記載のプラズマ装置用部品。
- 金属またはセラミックスから成る基材上の表面に、衝撃焼結法により窒化アルミニウム被膜を形成した請求項1に記載のプラズマ装置用部品の製造方法において、燃焼フレーム炎に窒化アルミニウム粒子を含むスラリーを供給する工程と、上記窒化アルミニウム粒子を、噴射速度が400〜1000m/secとなるように基材上に噴射させる工程とを具備することを特徴とするプラズマ装置用部品の製造方法。
- 前記スラリーに含まれる窒化アルミニウム粒子は、純度が99.9%以上である窒化アルミニウム粒子であることを特徴とする請求項10に記載のプラズマ装置用部品の製造方法。
- 前記窒化アルミニウム粒子の平均粒径が0.05〜5μmであることを特徴とする請求項10乃至11のいずれか1項に記載のプラズマ装置用部品の製造方法。
- 前記窒化アルミニウム被膜の膜厚が10μm以上であることを特徴とする請求項10乃至12のいずれか1項に記載のプラズマ装置用部品の製造方法。
- 前記窒化アルミニウム粒子を含むスラリーを燃焼フレーム炎の中心に供給することを特徴とする請求項10乃至13のいずれか1項に記載のプラズマ装置用部品の製造方法。
- 前記窒化アルミニウム粒子を含むスラリーを供給する燃焼フレームの温度は、供給する窒化アルミニウム粒子の沸点未満に調整されていることを特徴とする請求項10乃至14のいずれか1項に記載のプラズマ装置用部品の製造方法。
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