Phosphorus-31 NMR analysis of gold plating baths

Technical Report · Sun Mar 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/5740821· OSTI ID:5740821

Smith, R E

This report describes the nuclear magnetic resonance (NMR) analysis of gold plating baths in the Micro-Miniature Electronic Assembly department of Allied-Signal Inc., Kansas City Division (KCD). The baths were analyzed for phosphorylated components. In freshly prepared gold plating baths in this department the principle compound observed is aminotrimethyl-phosphonate, or ATMP. As the bath is used in production, the ATMP breaks down; and new compounds, aminodimethylphosphonate (ADMP), aminomonomethylphosphonate, (AMMP), and inorganic phosphate (H{sub 2}PO{sub 4}{sup {minus}}), are formed. The NMR method has been used for almost three years to monitor the concentrations of the ATMP and breakdown products. In a previous report, results from January through October 1988 were reported. In this report, results from November 1988 through January 1991 are given.

• Research Organization: Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00613
• OSTI ID: 5740821
• Report Number(s): KCP-613-4665; ON: DE92010069
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
AQUEOUS SOLUTIONS
CHEMICAL ANALYSIS
CONTROL
CYANIDES
DEPOSITION
DISPERSIONS
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROPLATING
ELEMENTS
GOLD
ISOTOPES
LIGHT NUCLEI
LYSIS
MAGNETIC RESONANCE
METALS
MIXTURES
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHONATES
PHOSPHORUS 31
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
PLATING
PROCESS CONTROL
RESONANCE
SOLUTIONS
STABLE ISOTOPES
SURFACE COATING
TRANSITION ELEMENTS