TABLE 28.1 Typical cathode efficiencies in electroplating and values of plating constant C. Plate Metal Cadmium...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
TABLE 28.1 Typical cathode efficiencies in electroplating and values of plating constant C. Plate Metal" Cadmium (2) Chromium (3) Copper (1) Gold (1) Nickel (2) Silver (1) Tin (4) Zinc (2) Electrolyte Cyanide Chromium-acid-sulfate Cyanide Cyanide Acid sulfate Cyanide Acid sulfate Chloride Cathode Efficiency (%) 90 15 98 80 95 100 90 95 Plating Constant Ca mm²/amp-s -2 6.73 x 10-2 2.50 x 10-² 7.35 x 10-2 10.6 x 10-2 3.42 x 10-² 10.7 x 10-2 4.21 x 10-² 4.75 x 10-² in ³/amp-min -4 2.47 x 10- 0.92 x 101 2.69 x 101 3.87 x 107 1.25 x 107 3.90 x 107 1.54 x 107 1.74 x 107 4 4 Compiled from [17]. "Most common valence given in parenthesis (); this is the value assumed in determining the plating constant C. For a different valence, compute the new Cby multiplying C value in the table by the most common valence and then dividing by the new valence. TABLE 28.1 Typical cathode efficiencies in electroplating and values of plating constant C. Plate Metal" Cadmium (2) Chromium (3) Copper (1) Gold (1) Nickel (2) Silver (1) Tin (4) Zinc (2) Electrolyte Cyanide Chromium-acid-sulfate Cyanide Cyanide Acid sulfate Cyanide Acid sulfate Chloride Cathode Efficiency (%) 90 15 98 80 95 100 90 95 Plating Constant Ca mm²/amp-s -2 6.73 x 10-2 2.50 x 10-² 7.35 x 10-2 10.6 x 10-2 3.42 x 10-² 10.7 x 10-2 4.21 x 10-² 4.75 x 10-² in ³/amp-min -4 2.47 x 10- 0.92 x 101 2.69 x 101 3.87 x 107 1.25 x 107 3.90 x 107 1.54 x 107 1.74 x 107 4 4 Compiled from [17]. "Most common valence given in parenthesis (); this is the value assumed in determining the plating constant C. For a different valence, compute the new Cby multiplying C value in the table by the most common valence and then dividing by the new valence.
Expert Answer:
Related Book For
Materials Science and Engineering An Introduction
ISBN: 978-0470419977
8th edition
Authors: William D. Callister Jr., David G. Rethwisch
Posted Date:
Students also viewed these mechanical engineering questions
-
A uniform piece of sheet steel is shaped as in Figure P9.41. Compute the x and y coordinates of the center of mass of the piece. y(cm) 30 20 10 x(cm) 10 20 30 Figure P9.41
-
A cylindrical piece of 4140 steel is to be austenitized and quenched in moderately agitated oil. If the microstructure is to consist of at least 50% martensite throughout the entire piece, what is...
-
A cylindrical piece of 8640 steel is to be austenitized and quenched in moderately agitated oil. If the hardness at the surface of the piece must be at least 49 HRC, what is the maximum allowable...
-
Which of the following activity bases would best be used to allocate setup activity to products? a. Number of inspections b. Direct labor hours c. Direct machine hours d. Number of production runs
-
Let A be an idempotent matrix. (a) Show that An = A for all integers n 1. (b) Show that In - A is also idempotent.
-
Let y (x 2 + 4) = 8 a. Use implicit differentiation to find dy/dx. b. Find equations of all lines tangent to the curve y(x 2 + 4) = 8 when y = 1. c. Solve the equation y(x 2 + 4) = 8 for y to find an...
-
Almetals, Inc., a Michigan company, entered into a contract with the German firm Wickeder Westfalenstahl regarding the purchase of clad metal, a specialty metal used in a variety of industries but...
-
Crop-Quick Inc. replenishes its three distribution centers in Boston, Denver and Houston from its Las Vegas central supply warehouse. The distribution schedule for one of its products for the next...
-
Simon Company's year-end balance sheets follow. At December 31 Assets Current Year 1 Year Ago 2 Years Ago Cash Accounts receivable, net $ 34,375 99,630 $ 40,993 69,607 Merchandise inventory Prepaid...
-
Their 1.5 inch, 90-degree copper elbow (see below) is a very popular item in the plumbing line that comes packaged in 10 elbows per box. The box costs about $65 to Western, and Western sells it at...
-
Why is it important to identify whether ordinary income or statutory income is exempt income or non-assessable non-exempt income? Provide at least one example each- exempt income and non- assessable...
-
Why competencies are important for our success and development? Briefly state 3 points. What are 3 competencies that you would like to focus for yourself? What benefits it gives to have better...
-
Why does education vary so much by the state? Use the state constitutions for Florida and a state of your choice to review and discuss the differences and similarities in education. Discuss the ways...
-
7. This concept measures a hotel manager's efforts in achieving maximum occupancy at the highest room rate possible. a. Occupancy percentage b. Average rate c. Yield percentage d. Franchise agreement...
-
What is the key purpose and key objectives of NGO's in developing countries? Expalin and give examples. What are some disadvantages of foreign aid to recipient countries? What problems or issues can...
-
Why due diligence, both legal and financial, is important for the song catalog purchase? Why it is important to understand the details of sources of income, how and when it is earned, and how it is...
-
Research an article on a research study that had significant unethical implications. Summarize the study. Explain one concept or term learnt that might prevent this type of unethical occurrence from...
-
For the following exercises, write the polynomial function that models the given situation. Consider the same rectangle of the preceding problem. Squares of 2x by 2x units are cut out of each corner....
-
If cupric oxide (CuO) is exposed to reducing atmospheres at elevated temperatures, some of the Cu2+ ions will become Cu+. (a) Under these conditions, name one crystalline defect that you would expect...
-
Demonstrate, in a manner similar to Equation 15.4, how vulcanization may occur in a butadiene rubber.
-
Within a cubic unit cell, sketch the following directions: (a) , [1 10] (b) , [1 2 1] (c) , [01 2] (d) , [13 3] (e) , [1 1 1] (f) , [1 22] (g) , [12 3 ] (h) . [1 03]
-
On September 29, 2008, the stock market fell almost 7%. How can we reconcile these kinds of huge losses in the stock market with the efficient market hypothesis?
-
In 2018, Germany had the worlds largest current account surplus of US$291 billion. Using this one piece of information, answer the following questions. a. Which was greater, the income Germans earned...
-
In the first quarter of 2019, the output gap in the United States was 0.8%. Make a prediction about what you think the output gap will be in the second quarter of 2019. Explain your reasoning.
Study smarter with the SolutionInn App