JP6238747B2 - クリープ腐食を減少させる方法 - Google Patents
クリープ腐食を減少させる方法 Download PDFInfo
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- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 8
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
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- 229920000742 Cotton Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 229920006362 Teflon® Polymers 0.000 description 1
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
- SFDJOSRHYKHMOK-UHFFFAOYSA-N nitramide Chemical compound N[N+]([O-])=O SFDJOSRHYKHMOK-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
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- 239000002023 wood Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/282—Applying non-metallic protective coatings for inhibiting the corrosion of the circuit, e.g. for preserving the solderability
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/015—Fluoropolymer, e.g. polytetrafluoroethylene [PTFE]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0179—Thin film deposited insulating layer, e.g. inorganic layer for printed capacitor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09872—Insulating conformal coating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/09—Treatments involving charged particles
- H05K2203/095—Plasma, e.g. for treating a substrate to improve adhesion with a conductor or for cleaning holes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/284—Applying non-metallic protective coatings for encapsulating mounted components
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Chemically Coating (AREA)
- Manufacturing Of Printed Wiring (AREA)
Description
硫黄土テスト法は、例えばクリープ腐食が非常に激しい粘土細工スタジオなどの状況をシミュレートする技術である。この方法は、当該分野においてよく知られた、クリープ腐食の影響を評価する技術である。本方法は、硫黄化合物源として硫黄含有土を用いる(例えば、Creep corrosion on lead−free printed circuit boards in high sulfur environments,Randy Schueller,Published in SMTA Int’l Proceedings,Orlando,FL,Oct 2007を参照されたい)。
プリント回路基板をプラズマ反応室内に導入した。反応室を、50mTorrの動作圧力まで減圧し、C3F6ガスを1000sccmの流量で導入した。ガスを30秒間反応室内に流し、13.56MHz周波数および2.4kWパワーでプラズマ生成器をONにした。プリント回路基板を活性プラズマに7分間晒し、その後にプラズマ生成器をOFFにして反応室を大気圧に戻し、コートされたプリント回路基板を反応室から取り出した。
プリント回路基板をプラズマ反応室内に導入した。反応室を、70mTorrの動作圧力まで減圧し、C3F6ガスを750sccmの流量で導入した。ガスを30秒間反応室内に流し、40MHz周波数および7kWパワーでプラズマ生成器をONにした。プリント回路基板を活性プラズマに10分間晒し、その後にプラズマ生成器をOFFにして反応室を大気圧に戻し、コートされたプリント回路基板を反応室から取り出した。
プリント回路基板をプラズマ反応室内に導入した。反応室を、60mTorrの動作圧力まで減圧し、C3F6ガスを750sccmの流量で導入した。第2流量コントローラを介して、第2ガスであるヘリウムを100sccmの流量で反応室に追加した。混合ガスを30秒間反応室内に流し、40MHz周波数および7kWパワーでプラズマ生成器をONにした。プリント回路基板を活性プラズマに10分間晒し、その後にプラズマ生成器をOFFにして反応室を大気圧に戻し、コートされたプリント回路基板を反応室から取り出した。
銅トラックとはんだマスクを有する標準の空プリント回路基板から開始して、一連のテスト用プリント回路基板を構成した。これらは以下の表1および2に示す特徴を有する。
クリープ腐食なし(++)
低レベルのクリープ腐食(+)
高レベルのクリープ腐食(−−)
電気部品を実装する前にプラズマ重合フッ化炭化水素をプリント回路基板へ適用することにより、クリープ腐食を効果的に抑制することができた。
Claims (15)
- プリント回路基板上のクリープ腐食を減少させる方法であって、
前記プリント回路基板は、基板、前記基板の少なくとも1面に配置された複数の導体トラック、前記複数の導体トラックの少なくとも第1領域を被覆するはんだマスク、および前記複数の導体トラックの少なくとも第2領域を被覆する表面仕上げを備え、
前記表面仕上げは、無電解銀(ImAg)、無電解ニッケル/無電解金(ENIG)、無電解ニッケル/無電解パラジウム/無電解金(ENEPIG)、または無電解すず(ImSn)であり、
前記方法は、プラズマ重合によってフッ化炭化水素を前記はんだマスクの少なくとも一部および前記表面仕上げの少なくとも一部へ積層するステップを有する、
方法。 - 前記表面仕上げは無電解銀(ImAg)である、
請求項1記載の方法。 - 前記はんだマスクはさらに、前記基板の領域を覆う、
請求項1または2記載の方法。 - 前記方法は、
前記プラズマ重合フッ化炭化水素を積層した後に、少なくとも1つの電気部品を少なくとも1つの前記導体トラックに接続するステップを有する、
請求項1から3のいずれか1項記載の方法。 - 前記方法は、
前記少なくとも1つの電気部品を少なくとも1つの前記導体トラックに接続した後、プラズマ重合によってフッ化炭化水素を追加積層するステップを有する、
請求項4記載の方法。 - 前記追加積層したプラズマ重合フッ化炭化水素のコートは、前記プリント回路基板および前記少なくとも1つの電気部品を形状適合的にコートする、
請求項5記載の方法。 - 前記方法は、
プラズマ重合によってフッ化炭化水素を、前記はんだマスクまたは前記表面仕上げで覆われていない前記複数の導体トラックの第3領域上に少なくとも積層するステップを有する、
請求項1から6のいずれか1項記載の方法。 - 前記複数の導体トラックは銅を含む、請求項1から7のいずれか1項記載の方法。
- 基板、
前記基板の少なくとも1面に配置された複数の導体トラック、
前記複数の導体トラックの少なくとも第1領域を被覆するはんだマスク、
前記複数の導体トラックの少なくとも第2領域を被覆し、無電解銀(ImAg)、無電解ニッケル/無電解金(ENIG)、無電解ニッケル/無電解パラジウム/無電解金(ENEPIG)、または無電解すず(ImSn)である、表面仕上げ、
前記はんだマスクの少なくとも一部および前記表面仕上げの少なくとも一部の上に形成されたプラズマ重合フッ化炭化水素コート、
を備える被覆プリント回路基板。 - 前記表面仕上げは無電解銀(ImAg)である、
請求項9記載の被覆プリント回路基板。 - 前記はんだマスクはさらに、前記基板の領域を覆う、
請求項9または10記載の被覆プリント回路基板。 - 前記プラズマ重合フッ化炭化水素コートを介して少なくとも1つの前記導体トラックに接続された少なくとも1つの電気部品を備える、
請求項9から11のいずれか1項記載の被覆プリント回路基板。 - 前記プリント回路基板および前記少なくとも1つの電気部品を形状適合的にコートするプラズマ重合フッ化炭化水素追加コートを備える、
請求項12記載の被覆プリント回路基板。 - 前記はんだマスクまたは前記表面仕上げによってコートされていない前記複数の導体トラックの少なくとも第3領域上にプラズマ重合フッ化炭化水素コートを備える、
請求項9から13のいずれか1項記載の被覆プリント回路基板。 - 前記複数の導体トラックは銅を含む、
請求項9から14のいずれか1項記載の被覆プリント回路基板。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1019302.7A GB2485419B (en) | 2010-11-15 | 2010-11-15 | Method for reducing creep corrosion |
GB1019302.7 | 2010-11-15 | ||
PCT/GB2011/001579 WO2012066273A1 (en) | 2010-11-15 | 2011-11-09 | Method for reducing creep corrosion |
Publications (2)
Publication Number | Publication Date |
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JP2014501039A JP2014501039A (ja) | 2014-01-16 |
JP6238747B2 true JP6238747B2 (ja) | 2017-11-29 |
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Application Number | Title | Priority Date | Filing Date |
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JP2013538259A Expired - Fee Related JP6238747B2 (ja) | 2010-11-15 | 2011-11-09 | クリープ腐食を減少させる方法 |
Country Status (15)
Country | Link |
---|---|
US (1) | US20130240256A1 (ja) |
EP (1) | EP2641456A1 (ja) |
JP (1) | JP6238747B2 (ja) |
KR (1) | KR20130114180A (ja) |
CN (1) | CN103210704B (ja) |
AU (1) | AU2011330946B2 (ja) |
BR (1) | BR112013011924A2 (ja) |
CA (1) | CA2816840A1 (ja) |
GB (1) | GB2485419B (ja) |
MX (1) | MX350116B (ja) |
MY (1) | MY163049A (ja) |
RU (1) | RU2573583C2 (ja) |
SG (1) | SG190163A1 (ja) |
TW (1) | TWI557272B (ja) |
WO (1) | WO2012066273A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0703172D0 (en) | 2007-02-19 | 2007-03-28 | Pa Knowledge Ltd | Printed circuit boards |
WO2010020753A2 (en) | 2008-08-18 | 2010-02-25 | Semblant Limited | Halo-hydrocarbon polymer coating |
US8995146B2 (en) | 2010-02-23 | 2015-03-31 | Semblant Limited | Electrical assembly and method |
US9277642B2 (en) * | 2013-03-05 | 2016-03-01 | Eastman Kodak Company | Imprinted bi-layer micro-structure method |
US10212825B2 (en) | 2016-03-03 | 2019-02-19 | Motorola Mobility Llc | Polysiloxane films and methods of making polysiloxane films |
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GB2485419B (en) | 2015-02-25 |
WO2012066273A1 (en) | 2012-05-24 |
GB2485419A (en) | 2012-05-16 |
AU2011330946B2 (en) | 2015-10-01 |
RU2573583C2 (ru) | 2016-01-20 |
MX350116B (es) | 2017-08-28 |
SG190163A1 (en) | 2013-07-31 |
MY163049A (en) | 2017-08-15 |
RU2013126037A (ru) | 2014-12-27 |
CN103210704A (zh) | 2013-07-17 |
GB201019302D0 (en) | 2010-12-29 |
KR20130114180A (ko) | 2013-10-16 |
US20130240256A1 (en) | 2013-09-19 |
EP2641456A1 (en) | 2013-09-25 |
AU2011330946A1 (en) | 2013-05-23 |
CN103210704B (zh) | 2016-08-24 |
TWI557272B (zh) | 2016-11-11 |
TW201229309A (en) | 2012-07-16 |
BR112013011924A2 (pt) | 2017-11-07 |
CA2816840A1 (en) | 2012-05-24 |
JP2014501039A (ja) | 2014-01-16 |
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